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Rear suspension

The rear suspension is an advanced multilink system with toe control arms and an aluminium rear axle carrier. It combines stiffer suspension component materials with a reduction in unsprung mass for excellent ride comfort and high cornering stability. The double-linked upper arm and integrated bearings and hub also deliver high rigidity and significant weight savings.


Using a multilink system enables a fine balance of handling, stability and ride comfort to be achieved. The upper arms contribute to a reduction in upward spring motion; the mid-arm helps reduce body roll; and the low arm provides an improved anti-lift/anti-squat ratio. Also, aligning the shock absorbers along the same lower axis as the coil springs avoids compromising the width of the boot.
Shock absorbers

The new IS uses new, high performance monotube shock absorbers, designed to dissipate heat more efficiently and so deliver better control and less high-use fade.


A large, 45mm piston diameter gives sharper response to vertical wheel movement and a new fluid and oil seal design delivers greater damping force under smaller compression. A pyramidal valve stack design reduces camping force under higher piston velocity, reducing impact shock when, for instance, the vehicle drives over a bump at high speed.
Large diameter, liquid-filled bushings to the lower suspension arm further reduces the transmission of vibration and rebound springs in all four shock absorbers control the roll angle in extreme situations.
The IS 250 Sport has its own, bespoke suspension set-up with stiffer spring and damper settings, which let the car sit 10mm lower to the ground. The firmer arrangement improves handling and reduces body roll even further.
ELECTRIC POWER STEERING

The new IS uses a new speed-sensitive, electrically assisted power steering (EPS) system. Compared to conventional hydraulic systems, it is more fuel efficient, noise-free and, with the steering gearbox located ahead of the front axle, gives smooth, linear feedback to the driver. Both the DC motor and the reduction mechanism are built into the ultra-compact steering gear housing.


The system’s electric motor uses a 42V AC current for quicker response to steering inputs. Unlike conventional steering systems, in which power assistance is determined solely by vehicle and engine speed, EPS additionally registers steering angle and torque in order to calculate the amount of assistance required at any time.
Key steering parameters have been amended from the previous IS model to create a quicker, more direct steering feel. The number of turns lock-to-lock has been reduced from 3.0 to 2.91, and the gear ratio has been simultaneously reduced from 14.5 to 13.5. Furthermore, the IS has a class-leading turning radius of 5.1m.
On the IS 220d Sport, which is equipped with Lexus’s Vehicle Dynamics Integrated Management (VDIM), EPS is incorporated into the system to promote smoother vehicle behaviour on the limit. Via the EPS actuator, VDIM will provide steering assistance to reduce torque steer under braking on surfaces with varying levels of grip. It will also introduce steering torque assistance to help counter both understeer and oversteer, helping the driver find the best front wheel steering angle and maintain vehicle stability with the least input. Unlike conventional stability control systems, which simply correct the vehicle’s path when under or oversteer is detected, VDIM anticipates the car reaching its dynamic limit and intervenes smoothly and discreetly.

BRAKES

Powerful 296 x 28mm ventilated front discs and 291 x 10mm rear discs are fitted to all IS models. A new pressure compensating system constantly monitors performance by comparing brake pedal effort with vehicle deceleration, applying additional pressure to reduce the effects of brake fade. Stiffer brake hose material is used, which distorts less under pressure and so gives better braking feel, and new high-grip coefficient brake pads further increase braking efficiency.


A new, link-type variable ratio brake pedal provides a progressive action, giving good low-deceleration feel with maximum high deceleration power.
The IS deploys a comprehensive range of active safety braking functions: ABS, Traction Control (TRC), Vehicle Stability Control (VSC), Brake Assist System (BAS), Electronic Brakeforce Distribution (EBD) and Hill-start Assist Control (HAC). On models equipped with automatic transmission, HAC lets the vehicle pull away smoothly on a gradient without rolling backwards. This is achieved by maintaining brake pressure for five seconds after the brake pedal has been released.
IS models fitted with VDIM also benefit from integrated activation of these braking, stability and traction control systems, further improving the overall dynamic performance of the vehicle.
WHEELS AND TYRES

The new IS is available with a choice of bespoke 16, 17 and 18-inch alloy wheels. The 16-inch rims are fitted as standard to the IS 250 and 220d; the 17-inch versions to the SE and SE-L models; and the 18-inch wheels to the Sport versions.


The 18-inch wheels are fitted with wider, 255/40R18 Dunlop SP Sport Maxx tyres at the rear, specially developed for the Lexus IS to provide superior grip on all road surface conditions.
POWERTRAINS

  • New 204bhp direct injection 2.5-litre V6 petrol engine with Dual VVT-i

  • Lexus’s first diesel, an aluminium block 175bhp 2.2-litre common rail unit offering class-leading refinement

  • Lexus Clean Diesel Technology ensures the IS 220d is the cleanest luxury diesel car for combined NOx and PM emissions

  • IS 220d Sport model features shorter differential gear ratio for 30 per cent improvement in in-gear acceleration

The new generation Lexus IS is offered with a choice of two power units: a 204bhp 2.5-litre direction injection petrol V6 and Lexus’s first diesel engine, a four-cylinder 175bhp 2.2-litre unit. This new diesel will dramatically strengthen Lexus’s position in a highly competitive market segment.
Both engines are mated to a newly-developed six-speed manual transmission. The V6 is also available with an optional six-speed automatic with sequential paddle shift control.
2.5-LITRE V6 PETROL ENGINE

Lexus’s new, chain driven DOHC 24-valve 2.5-litre V6 petrol engine has a compact design and is notably light. Weighing in at 180kg (service mass), it is no heavier than the 2.0-litre engine used in the previous generation IS.


Weight-saving features include an aluminium die-cast cylinder block and intake manifold, a resin intake chamber, and water and oil pumps located within the chain cover.
The direct injection technology gives the engine the highest injection pressure among petrol engines, at 130 bar. It develops 204bhp at 6,400rpm and a class-leading 252Nm of torque at 4,800rpm, translating into performance figures of 0-62mph in 8.1 seconds (8.4 seconds automatic) and a top speed of 144mph (141mph automatic). Combined cycle fuel consumption is 28.8mpg (31.0mpg automatic).
The adoption of D-4 direct injection reduces the intake mixture temperature, which allows for a higher compression ratio, which in turn results in both enhanced power output and fuel efficiency. Unlike conventional petrol engines, the Lexus V6 achieves greater injection precision through control of both injection timing and volume. In addition, compression stroke injection operates during cold engine starts to increase exhaust gas temperature and expedite catalyst warm-up. High pressure fan-nozzle slit injectors are used to achieve the best fuel-air mixture, and pent-roof combustion chambers with a shallow piston cavity deliver excellent combustion and anti-knock performance.
The new V6 also uses an electrically activated, two-stage Acoustic Control Induction System (ACIS). This divides the intake manifold into two sections, with an intake air control in the bulkhead that opens and closes to vary the length of the manifold according to engine speed and throttle valve angle. This increases power output at all engine speeds. The ACIS electric actuator is bonded to the plastic intake chamber using an advanced laser welding process.


Swirl Control Valves (SCVs) are installed in the intake manifold, one per cylinder. With optimised intake port diameter and length, these stabilise combustion at a low coolant temperature and allow high levels of torque to be generated at low engine revs.
The adoption of Dual VVT-i (Variable Valve Timing – intelligent) on both intake and exhaust camshafts also significantly improves engine performance. Dual VVT-i can control the intake and exhaust camshafts through angles of up to 40 and 35 degrees respectively and allows a greater intake/exhaust overlap. This benefits low end and top end torque performance, as well as helping to reduce exhaust emissions and give better cold start performance.
The chain-driven valve system employs roller rocker arms, the marked reduction in friction between the cam and sliding components helping to enhance fuel efficiency. In addition, a concave camshaft profile increases valve lift to boost output. The system requires no adjustment of the valve clearance over the life of the vehicle.
All exhaust components are fabricated in stainless steel. Using a dual-tube exhaust manifold construction improves resistance to corrosion and also reduces heat loss and noise. Compared to the system on the previous IS 300 model, larger twin main silencers with variable back-pressure valves and a long-tail structure reduce low frequency booming (7dB less at 1,200rpm) and cut back-pressure at high revs by 30 per cent to improve engine output.
2.2-LITRE DIESEL ENGINE

Lexus’s first diesel engine is a four-cylinder, 2,231cc common rail diesel unit that will power the new IS 220d, due for launch in the UK in January 2006. The unit meets Lexus’s stringent standards for refinement, with special attention given to NVH performance, and has an aluminium block, which helps save weight and aids driving dynamics.


The engine produces 175bhp at 3,600rpm and 400Nm of torque from 2,000 to 2,600rpm. Preliminary, pre-UK homologation performance data indicate acceleration from rest to 62mph in 8.9 seconds and a top speed of 134mph, while returning strong fuel economy – 44.8mpg in combined cycle driving. These figures remain to be confirmed prior to the IS 220d’s launch in January.
The engine features third-generation common rail technology with piezoelectric fuel injectors, operating with an exceptionally high injection pressure of 1,800bar and one of the world’s lowest compression ratios for a diesel, 15.8:1. The low compression ratio reduces the compression build-up and reduces noise and vibration from the combustion process.
The common rail system is equipped with high speed injectors with 10 holes and a 0.13mm nozzle diameter, enabling five separate injections per cycle.
Measures to reduce noise and vibration include the adoption of a balancer shaft, which reduces the level of engine booming noise between 2,000 and 3,000rpm. A urethane plastic cover and three-layer heat insulator work with urethane spacers on the upper surface of the inlet manifold and the rear of the oil cooler and oil pan to further reduce engine noise, and a variable backpressure system cuts down noise from the exhaust at low engine speeds. The exhaust also incorporates twin ball joints to reduce vibration and noise.
These NVH reduction measures give the Lexus IS 220d a particularly quiet cabin environment. Testing using the Articulation Index, based on the audibility of random words in conversation, shows performance superior to many petrol-powered vehicles.
The diesel engine is equipped with Lexus Clean Diesel Technology, a package of innovative features that work to reduce exhaust emissions substantially below Euro-IV levels. Central to the technology is the Diesel Particulate NOx Reduction (DPNR) four-way catalytic converter, the only catalyst in the world which simultaneously reduces nitrogen oxides (NOx) and particulate matter (PM), achieving emissions levels respectively of 0.159 and 0.0019g/km. This performance makes the IS 220d the cleanest luxury diesel car in the world in terms of combined NOx and PM emissions.
TRANSMISSIONS

Both diesel and petrol IS models use a compact and precise six-speed manual transmission. The unit features a multi-cone synchroniser to reduce shift effort; slide ball bearings in the gear lever shaft and fork shaft to improve shift efficiency; a triple-synchro mechanism from first to third to enhance shift feel; and a shift guide plate to reduce the amount of play in the transmission after a shift has been made.


The IS 220d features a quiet, durable driveline adopted from the Lexus LS 430 and further improved with a liquid-filled differential mount for better vibration damping. Sport models use a shorter differential gear ratio, which improves in-gear acceleration by an average 30 per cent.
The ultra-smooth V6 petrol engine is also available with an all-new six-speed automatic transmission. This system offers manual sequential gear range selection, using paddle controls mounted on the steering wheel, allowing the driver to make shifts without having to modify his or her grip on the wheel, even when cornering. Alternatively, shifts can be made using the gear lever. The sequential mode effects faster downshifts than the fully automatic mode enabling the driver to enjoy greater involvement and exploitation of the IS’s dynamic qualities.
The automatic transmission has three planetary gear units, four clutches and four one-way clutches. A
new clutch-to-clutch shift control operates between fifth and sixth gears, eliminating the one-way clutch between them, saving weight and allowing a more compact design to be used. Artificial Intelligence control (AI SHIFT) automatically changes the gear shifting pattern according to road conditions and driving style.
An improved lock-up timing control can improve fuel consumption in fifth and sixth gear driving and further economy during cold starts is achieved by means of an automatic transmission fluid warmer.
SAFETY

  • Pre-crash Safety (PCS) and Adaptive Cruise Control (ACC), optional on IS 250 automatic

  • Unique Vehicle Dynamics Integrated Management (VDIM) system, standard on IS 220d Sport

  • Adaptive Front-lighting System (AFS) with four-bulb high beam lamp design

  • Comprehensive passive safety provisions, including world’s first twin-chamber passenger airbag and driver and passenger knee airbags

  • Subjected to Lexus’s stringent car-to-car and roll-over standards

  • Next generation Whiplash Injury Lessening (WIL) front seats


ACTIVE SAFETY

The Lexus IS range is equipped across the board with ABS with Electronic Brakeforce Distribution, Brake Assist System (BAS), Traction Control (TRC) and Vehicle Stability Control (VSC).


Pre-crash safety (PCS)

The IS 250 SE-L with automatic transmission is available with an optional sophisticated Pre-crash Safety system (PCS), which detects when a collision is inevitable and coordinates safety systems to help reduce the impact. A millimetre-wave radar sensor is fitted to the front of the vehicle, which scans through 20 degrees and 100 metres ahead to detect other vehicles or obstacles, even when the car is cornering. Through a network of sensors, the system’s computer constantly checks data including vehicle speed, steering angle and yaw rate to determine in advance if a collision is unavoidable.


If PCS calculates that a crash will happen, it trigges pretensioners to take up any slack in the front seatbelts and simultaneously adjusts the Brake Assist System to deliver maximum braking power as soon as the driver presses the brake pedal. PCS will also operate if sever under or oversteer is experienced or during emergency braking, if the vehicle is travelling at more than 10mph (15km/h).
Adaptive Cruise Control (ACC)

Adaptive Cruise Control (ACC) is a system that is complementary to PCS and included in the same equipment option for the IS 250 SE-L with automatic transmission. ACC operates in two modes: constant speed control and vehicle-to-vehicle distance control.



The first mode works like a conventional cruise control system, while the second uses the PCS millimetre-wave radar sensor, linked to a constant speed decelerator, to monitor the distance from the vehicle in front and automatically slow the car to maintain a safe gap. Once the road ahead is clear, ACC accelerates back to the selected cruising speed.

The driver can select the preferred minimum vehicle-to-vehicle distance – long, middle or short – to be maintained by using a switch on the steering wheel and the system’s control settings are shown on the IS’s multi-information display.
Vehicle Dynamics Integrated Management (VDIM)

The IS 220d Sport is equipped with Lexus’s unique Vehicle Dynamics Integrated Management system, which enhances the vehicle’s performance, traction control and stability. Using comprehensive status data collected by sensors throughout the car, VDIM integrates the operation of the ABS, Electronic Brakeforce Distribution (EBD), Traction Control (TRC) and Vehicle Stability Control (VSC) with the Electric Power Steering (EPS).



By applying integrated control of all the elements related to vehicle movement, including engine torque, brakes and steering, VDIM not only optimizes activation of the braking, stability and traction control systems, it also further improves the vehicle’s overall dynamic performance.
More than that, whereas conventional active safety systems are only activated immediately after a vehicle reaches the limit of its performance, VDIM engages control before that limit is reached. As a result, the IS 220d Sport’s dynamic threshold is expanded and the vehicle behaves more smoothly on the limit, thanks to the less obtrusive intervention of the control systems.
For example, when braking in a corner, a loss of rear tyre grip can result in oversteer. Through the Electronic Brakeforce Distribution function, the use of linear brake actuators makes it possible for control to start before the vehicle reaches its limit. The VDIM system apportions the appropriate braking force to each wheel, ensuring continued vehicle stability by pre-emptively restraining the tendency for wheelspin, while also contributing to superior braking performance.
Even harder braking in a corner can provoke front-wheel lock-up and a loss of grip, causing understeer. Once again, by independently controlling the braking force to all four wheels via EBD, VDIM helps prevent lock-up and regain vehicle balance, providing seamless control until the conventional ABS and VSC functions come into play.
Moreover, by means of the EPS actuator, VDIM augments VSC operation, providing steering assistance to reduce torque steer on surfaces with varying levels of grip. It will also introduce steering torque assistance in both understeer and oversteer conditions, helping the driver optimise the steering angle of the front wheels and maintain vehicle stability with minimum input.
Adaptive Front-lighting System (AFS)

The new IS is fitted with Lexus’s Adaptive Front-Lighting System, which swivels one projector (both on high and low beam) of the bi-xenon headlamps through up to 15 degrees, helping to illuminate a bend as the driver steers into it. The new bi-xenon headlights now have four high-beam bulbs, widening the high beam illumination pattern from mid to long range.


PASSIVE SAFETY
Body structure

The highly rigid bodyshell of the new Lexus IS features numerous structural reinforcements to enhance its performance in a collision. Lexus’s own internal testing suggests the new IS has the potential to achieve a five-star rating for adult passenger protection from Euro NCAP.


Compared to the previous generation IS, a new, octagonal section front side member crash box improves energy absorption within a shorter front overhang. The inner door reinforcements have been strengthened and the gap between the inner door panel and the B pillar has been reduced. This directs the impact load to the door belt line reinforcement more effectively, reducing the load to the pillar in the event of an offset frontal collision.
To improve side impact protection, the B pillar itself has been reinforced, while the use of high tensile steel for the both the bulkhead inside the rocker and the cross-member reinforcement further increases structural stiffness. Further strategic reinforcements help disperse side impact forces and prevent deformation of the vehicle body.
Airbags

The new IS is the first car in the world to feature a front passenger airbag with a dual-chamber design. Its advanced shape is based on the Lexus Omni-Support concept: once inflated, the twin chambers create a depression in the centre of the airbag, effectively cradling the passenger’s face, while allowing the physical impact of the bag to be dispersed across other parts of the head, shoulders and upper body.


The new IS introduces driver and passenger knee airbags to its market segment and is also equipped with new, larger seat-mounted front side airbags. These Torso Abdomen Pelvis (TAP) airbags provide superior protection, being 30 per cent bigger than previous designs. Curtain shield airbags that run the length of the interior are also fitted.
In total, eight airbags are fitted as standard to all IS models.
Car-to-car compatibility and roll-over tests

The new IS is the first model to be developed according to Lexus’s own more stringent car-to-car compatibility and roll-over crash test standards. These include frontal, side and rear collisions with a two-tonne vehicle at 34mph (55km/h, 50 per cent overlap).


This programme ensures the IS provides class-leading passive safety protection across a comprehensive range of real-world crash scenarios.
Whiplash Injury Lessening (WIL) seats

The new Lexus IS features second-generation Whiplash Injury Lessening seats, revised with a new seatback structure and a headrest designed to sit as close as possible to the occupant’s head during normal use. In the event of a rear impact, the lower seat back pushes backwards, closing the gap between the passenger’s head and the headrest and significantly reducing the risk of whiplash.


INTERIOR REFINEMENT AND TECHNOLOGY

  • Third generation smart keyless entry system with programmable smart key

  • Optitron instrumentation with progressive lighting technology

  • Dual-zone climate control air conditioning system with clean air sensor

  • Optional Multimedia Pack with Mark Levinson 14-speaker audio and DVD system, new-generation Lexus Navigation System, Bluetooth connectivity and first-in-class Parking Assist Monitor

The new Lexus IS range is offered in four grades: the entry point IS 250, SE and SE-L models are available from launch, with IS 220d versions and the IS 250 Sport due to join the line-up in January 2006; the IS 220d Sport will arrive in April. All IS models come equipped as standard with an excellent range of equipment, but owners can take advantage of high-tech options that deliver exceptional performance in satellite navigation and on-board entertainment.


IS 250 models feature:

  • Driver and front passenger front, side and knee airbags

  • Curtain airbags

  • ABS with Brake Assist System (BAS) and Electronic Brakeforce Distribution (EBD)

  • Traction Control (TRC)

  • Vehicle Stability Control (VSC)

  • Cruise control

  • Smart keyless entry system

  • Push-button start

  • 16in alloy wheels

  • Optitron instrumentation

  • LED sequenced interior lighting

  • Multi-Information Display

  • 13-speaker sound system with in-dash six-disc CD autochanger, MP3 compatibility and AUX socket for connecting personal music players

  • Electrically adjustable folding and heated door mirrors

  • Steering wheel controls for audio and Multi-Information Display

  • UV-reducing tinted side and rear windows

SE models add:



  • 17in alloy wheels

  • Leather Seating Pack (leather upholstery, heated and ventilated front seats, eight-way electric front seat adjustment)

SE-L models add:



  • Front and rear parking sensors

  • Rain-sensing wipers

  • Automatic headlights

  • Electrochromic auto-dimming rear view and door mirrors

  • High Intensity Discharge headlamps with Adaptive Front-lighting System (AFS) and washers

  • Rear armrest with storage box hatch through to boot

  • Electric rear window sunshade

  • Illuminated front scuff plates

  • Bird’s eye maple wood trim detail

  • Electrically adjustable steering column

  • Memory settings for steering wheel, front seats and door mirrors

Sport models feature:



  • 18in alloy wheels

  • Sport suspension

  • Sports pedals

  • Metal effect trim

  • Cellensia Seating pack (Cellensia suede-effect upholstery, heated front seats, eight-way electric front seat adjustment, front seat, steering wheel and door mirror position

Sport specification matches that of SE-L models, with the exception of the power rear window blind, illuminated front scuff plates and front seat ventilation function.


SMART KEYLESS ENTRY SYSTEM

All IS models benefit from Lexus’s third-generation smart keyless entry system. To gain entry to the vehicle and start the engine using the push-button, the driver simply needs to have the smart key on their person.


When the smart key comes within 0.7 to 1.0 metres of the locked vehicle door, it communicates with a transmitter built into the door handle and matches identity codes. A touch of the handle is then all that’s needed to unlock the door, or, when leaving the vehicle, to lock it.
The key also automatically activates the IS’s sequential entry lighting: first the puddle lights integrated into the door mirrors; followed by the main interior dome light.
Once inside the vehicle, the smart key identity is automatically recognised, allowing the driver to switch on the engine simply by pressing the push-button control on the dashboard.
Two smart keys are provided for each IS for different drivers to use. These can be programmed with individual preferences for driver’s seat and steering wheel position on SE-L and Sport models.
The key’s ECU can also be programmed to unlock one, two or all four doors in a single action. The IS cannot be locked if the smart key is detected in the cabin or boot and, should the battery run low, a warning message is displayed on the Multi-Information Display.
ELECTRONIC CLIMATE CONTROL

The latest-generation climate control air conditioning system, fitted as standard to all IS models, uses a variable-displacement compressor for quiet and efficient operation. It provides independent left and right side temperature controls and automatic control of the upper and lower cabin air zones, a humidity sensor and automatic cool air bypass control.


The air intake is isolated from the engine compartment to reduce the intrusion of engine noise. On IS 250 models the system incorporates an automatic recirculation mode, triggered by a clean air sensor, to prevent exhaust gases being drawn into the cabin. There is also a switchable pollen filter for the face vents, which operates with 97 per cent efficiency.
OPTITRON INSTRUMENTATION

The sculpted instrument binnacle employs second-generation Optitron technology for the white, backlit display. The rev counter and speedometer needles have progressive illumination and activate with a full dial-sweep. They are backed by secondary amber sweep rings that show the manual settings for the speed limiter and optimum gear shift revs. If the engine speed reaches the rev limit, a red ring light illuminates in the tachometer.


PREMIUM AUDIO SYSTEM

Lexus has achieved industry-leading standards in the field of in-car hi-fi and the new IS lives up to this reputation with a standard-fit 13-speaker audio system with a six-disc in-dash CD autochanger and auxiliary controls located on the steering wheel. The speaker array includes a slim subwoofer mounted in the parcel tray and each door houses a three-way configuration, comprising tweeter, woofer and mid-range unit, to deliver full-range sound reproduction throughout the interior.


The system is equipped to play MP3 and WMA (Windows Media Audio) files and includes a mini-jack AUX socket, neatly located in the centre console box, to allow portable music players, such as iPods, to be connected.
LEXUS MULTIMEDIA AND NAVIGATION SYSTEM

All versions of the new Lexus IS can be specified with an optional Multimedia Pack, comprising a bespoke Mark Levinson sound system, new generation Lexus satellite navigation and the Lexus Parking Assist Monitor – a first in the premium D segment.


Mark Levinson audio system

Lexus has continued its exclusive relationship with world-leading audio designer Mark Levinson to create a system designed specifically for the IS. The result is an exceptional 14-speaker, 300 watt package that fully exploits the excellent acoustic qualities of IS’s cabin and delivers the segment’s first complete, discrete 5.1 home theatre entertainment experience.


The quality of the new Lexus IS’s cabin makes a significant contribution to achieving the superb sound quality: the interior of the car is well isolated, with ultra-low levels of ambient noise, and the high rigidity of several components avoids unwelcome resonances.
The new equipment can play MP3 and WMA files stored on CD or DVD, and, through an auxiliary socket located in the centre console box, can link to personal audio equipment such as an iPod or Mini Disc player. An in-dash, six-disc CD and DVD player is also provided.
The system is the first in the premium D segment to offer a complete, discrete 5.1 home theatre entertainment experience, optimised for the playing of music. When the vehicle is stationary, music videos on disc and DVD films can be played via the seven-inch high-resolution Electro Multi Vision (EMV) display.
New-generation Lexus Navigation System

The new IS is the first model to benefit from the new-generation Lexus Navigation System. The DVD-based package stores mapping for all of western Europe on a single disc and marks a 65 per cent improvement in route calculation speed.


Thanks to increased power for the system hardware, the EMV full colour display has evolved to a VGA (video graphics array), increasing the range from 256 to 32,000 colours.
The system is equipped with three-language voice activation (English, French and German) and voice guidance is available in 10 languages. It is one of few on the market to combine the advantages of both touch-screen and voice activation for several navigation functions and audio, ventilation and telephone controls.
A Help function has been added, enabling the user to receive further instructions from an on-screen help button. Route tracing and lane guidance in major European cities (Berlin, Birmingham, Brussels, Cologne, Frankfurt, Glasgow, London, Manchester and Munich) are provided, together with Electronic Traffic Avoidance to help beat delays on route-programmed journeys.
Bluetooth connectivity

The system also provides Bluetooth connectivity, allowing hands-free use of compatible mobile phones via touch controls on the display screen, voice commands or buttons on the multi-function steering wheel. Up to 1,000 numbers can be stored.


Lexus Parking Assist Monitor

The Lexus Parking Assist Monitor is the first system of its kind to be offered in the premium D segment. It features a miniature camera mounted in the rear number plate surround, which projects a real-time


full colour view of the area behind the IS to the EMV screen in the centre console. To help execute reverse parking manoeuvres, guidelines can be generated, showing the prospective path of the vehicle based on the current steering angle.
LUXURY SPECIFICATIONS

SE and SE-L versions of the new Lexus IS are fitted with a Leather Seating Pack. This includes full leather eight-way electrically adjustable front seats with heating and ventilation functions. In ventilation mode, two fans silently draw air through the perforated seat back and cushion for extra comfort.


The Sport grade features electrically adjustable, heated front seats with Cellensia suede-effect upholstery instead of leather.
On SE-L and Sport models further sophistication is provided with an electrically adjustable steering column and three memory settings for the steering wheel, front seats and door mirrors.
SE-L and Sport grades provide electrochromatic rear view and door mirrors, which automatically adjust to avoid glare from the headlights of following vehicles. The door mirrors tilt downwards when reverse gear is selected, to provide a better view of the kerb when parking, and front and rear parking sensors give extra assistance when manoeuvring in tight spots, showing the position and proximity of any obstacles on the EMV screen and sounding a warning buzzer intermittently, then continuously, as the gap from the vehicle decreases.
Features unique to the SE-L grade include dark bird’s eye maple wood trim details, illuminated front scuff plates and an electrically operated sunshade for the back window. The sunshade automatically retracts when reverse gear is engaged, then redeploys once vehicle speed reaches 10mph (15km/h).
An electric tilt and slide sunroof is available as an option on SE, SE-L and Sport models. It is operated by a rotary control with nine different settings, including one-touch open and close functions.
LEXUS IS TECHNICAL SPECIFICATIONS


ENGINE

IS 250

IS 220d

Engine code

4GR-FSE

2AD-FHV

Engine type

V6, 60

Four in-line

Valve mechanism

24 valves, dual VVT-i

16 valves

Block & head material

Aluminium

Aluminium

Displacement (cc)

2,499

2,231

Bore x stroke (mm)

83.0 x 77.0

86.0 x 96.0

Fuel rating

95 octane petrol or higher

48 cetane low sulphur diesel

Compression ratio

12.0:1

15.8:1

Max. power (bhp/rpm)

204 @ 6,400

175 @ 3,600

Max. torque (Nm/rpm)

252 @ 4,800

400 @ 2,000-2,600

PERFORMANCE

MANUAL

AUTO

MANUAL

MANUAL SPORT

0-62mph (sec)

8.1

8.4

8.9

8.9

Max. speed (mph)

144

141

134

134

DIMENSIONS




Overall length (mm)

4,575

Overall width (mm)

1,800

Overall height (mm)

1,425

Wheelbase (mm)

2,730

Track front (mm)

1,535

Track rear (mm)

1,545

Overhang front (mm)

810

Overhang rear (mm)

1,035

Coefficient of Drag (Cd)

0.27

Minimum turning radius (m)

5.1

Fuel tank capacity (litres)

65

INTERIOR DIMENSIONS

IS 250

IS 220d

Interior length (mm)

1,855

Interior width (mm)

1,475

Interior height (mm)

1,165/1,120 with sunroof

Luggage capacity (litres)

378

WEIGHTS (kg)

MANUAL

AUTO

MANUAL

MANUAL SPORT

Kerb weight

1,570 – 1,635

1,570 – 1,635

1,585 – 1,655

1,585 – 1,655

Gross vehicle weight

2,055

2,045

2,075

2,075

Towing capacity (braked)

1,500

1,500

1,500

1,500

Towing capacity (unbraked)

560

560

560

560

TRANSMISSION

MANUAL

AUTO

MANUAL

MANUAL SPORT

Gear ratios

1st

3.791

3.538

5.232

5.232

2nd

2.275

2.060

2.644

2.644

3rd

1.524

1.404

1.605

1.605

4th

1.185

1.000

1.219

1.219

5th

1.000

0.713

1.000

1.000

6th

0.786

0.582

0.728

0.728

Reverse

3.466

3.168

4.525

4.525

Differential Gear Ratio

3.583

3.909

2.474

3.200

FUEL CONSUMPTION

MANUAL

AUTO

MANUAL

MANUAL SPORT

Combined (mpg)

28.8

31.0

44.8

N/A

Extra Urban (mpg)

36.7

40.4

52.3

N/A

Urban (mpg)

20.9

22.2

35.8

N/A

EMISSIONS

MANUAL

AUTO

MANUAL

MANUAL SPORT

CO2 (g/km)

231

214

168

N/A

NOx (g/km)

0.04

0.06

0.159

N/A

PM (g/km)

-

-

0.0019

N/A

HC (g/km)

0.04

0.05

-

N/A

HC + NOx (g/km)

-

-

0.160

N/A

VED band

F

F

F

F

SUSPENSION




Front

Double wishbones

Rear

5-arm multilink

Shock absorbers

Gas-filled monotube type with multi-leaf type linear control valve

BRAKES




Front (diameter x width, mm)

Ventilated discs, 296 x 28

Rear (diameter x width, mm)

Solid discs, 291 x 10

STEERING




Type

Rack and pinion

Ratio

13.5:1

Power steering type

Electric Power Steering (EPS)

Turns (lock to lock)

2.91

TYRES AND WHEELS




Tyre size

IS 250/220d

205/55 R16

SE and SE-L

225/45R17

Sport

225/40R18

Wheel size

IS 250/220d

16 x 7JJ

SE and SE-L

17 x 8 JJ

Sport

18 x 8J
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