2011 Subaru Impreza WRX STI introduced in the UK

Article by Christian Andrei, on October 7, 2010

Subaru released the availability and pricing of the 2011 WRX STI in the UK. Subaru has stopped using the Impreza designation for the latest generation. Both the four-and five-door variants of the new WRX STI are priced at GBP32,995. This is actually the first time that the four- and five-door versions have been sold together in the UK.

Powering the STI is a 2.5-litre Subaru boxer 16-valve turbo engine with Dual Active Valve Control that has an output of 30 hp and 407Nm of torque.

The 2011 model has the same output as the outgoing STI but it features improved torque delivery throughout the rev range that leads to improved response and more linear acceleration. Sprinting from zero to 62 mph (100 km/h) can be done in only 5.2 seconds.

Exterior styling received extensive revisions, with new bumpers, enlarged rear quarter panels and lower ride height. Upgrades were made to the quality of the cabin materials.

All-new RECARO bucket seats were introduced in this model too. Subaru has modified its three-mode SI-Drive (Subaru Intelligent Drive) system that can be used to make adjustments to the engine’s characteristics to best suit an assortment of driving conditions.

Subaru introduced some major changes to the 2011 version of the impressive Impreza WRX STI. The rear subframe now has sturdier bushings. In addition, the chassis has a lower ride height than the 2010 version.

The front subframe is also equipped with updated pillow-ball bushings. These improvements continue to improve camber and toe stiffness when driving the new Impreza WRX STI. Other improvements include near components in the front and rear suspension systems.

The front stabilizer bars are now 21 millimeters thick. The rear bars, on the other hand, have a thickness of 19 millimeters. These are both 1-millimeter improvements against the previous model. In addition, both suspension systems have increased spring rates as well.

Moreover, the front suspension’s rates are 15.6% higher, while the adjustments to the rear suspension resulted to 53% higher spring rates. Even the wheels have seen changes as well. The new Impreza WRX STI now features lightweight 18-inch aluminum wheels.

These wheels’ weights are now 17.6 lbs lighter than the wheels prescribed for the previous version. Consumers also have the option of buying the optional BBS wheels. Made of forged aluminum alloy, these wheels serve to make the vehicle even lighter than it already is.

Both wheel types are painted with high-luster paint. The Subaru Impreza WRX STI 2011 model is the only one in its line to be equipped with the Brembo Performance Brake System. The system uses disc brakes equipped with the Electronic Brake Front Distribution technology by Subaru.

The brakes themselves are ventilated 4-wheel Super Sport anti-lock disc brakes. They have the unique ability of individually responding to braking forces in each of the rear wheels. This gives the Impreza WRX STI unparalleled braking capabilities that help improve performance in hard cornering situations.

Press Release


Ever since its introduction in 2001, the Subaru Impreza WRX STI has been a byword for exceptional real-world driving performance. The new 2011 model, on sale from October 2010, incorporates a wide range of developments which maintain the continual evolution of this iconic vehicle.

So synonymous are the six letters ‘WRX STI’ with automotive exhilaration, that for this latest 2011 generation, the ‘Impreza’ moniker has been dropped and the new car will henceforth be known simply as the ‘Subaru WRX STI’.

In response to significant market demand the four-door saloon version of the Subaru WRX STI is once again available, after an absence of three years. The hatchback variant will sit alongside the saloon, and this will consequently mark the first time that four- and five-door versions of the car have been sold together in the UK.

In order to further refine its all-round performance, the 2011 WRX STI has been extensively tested under a wide variety of weather, traffic and road conditions, ranging from slow, congested city driving and rapid B-road sprints, to extreme ‘hot laps’ around famous racing circuits – including the notorious Nordschleife at the Nürburgring in Germany.

The new WRX STI benefits from a stiffened bodyshell and an extensively reworked suspension system – based upon the marque’s widely praised ‘spec. C’ set-up. Lower ride height and wider tyres also contribute to more direct and accurate control of the car and greater feedback for the driver.

The more rigid bodyshell has also made it possible to increase suspension travel, benefiting road-holding as well as ride refinement. An all-new design of wheel saves approximately two kilograms of un-sprung weight per corner compared to the outgoing model, helping to further improve ride and handling, as well as enhancing the car’s appearance.

Exterior styling is extensively revised, with new bumpers, enlarged rear quarter panels and lower ride height giving the car a more muscular presence. Inside, the quality of the cabin materials has been upgraded, and the driver and passenger are assured of a secure and comfortable seating position thanks to the introduction of all-new RECARO bucket seats.

The widely praised 2.5-litre Subaru boxer 16-valve turbo engine with Dual Active Valve Control produces 300ps at 6,000rpm and massive torque – with a peak of 407Nm at 4,000rpm – even from low-revs. While these outputs are unchanged from the outgoing STI, improved torque delivery throughout the rev range translates into better response and more linear acceleration. The zero-to-62mph sprint is achieved in just 5.2 seconds.

Significantly, the revised engine is cleaner, and successfully meets Euro 5 exhaust emissions standards.

Central to the agile handling of Subaru vehicles is the company’s legendary Symmetrical AWD (All-Wheel drive) system. This consists of the horizontally-opposed boxer engine, with its intrinsic low centre of gravity, combined with advanced AWD technology incorporating sophisticated front, centre and rear differentials. For the new WRX STI the system has been uprated, with revised settings for the differentials.

The car features a default setting of 41 / 59 per cent front / rear torque distribution for optimum balance, and the driver can adjust this while on the move using the four-mode (Driver’s Control Centre Differential) system. The WRX STI also incorporates Multi-Mode VDC (Vehicle Dynamics Control) – Subaru’s advanced electronic stability control (ESC), allowing the driver to modify the point of intervention of this electronic driver aid to suit their own tastes or driving conditions.

In order to develop a vehicle that provides exceptional levels of high performance and precision handling, together with user-friendly daily motoring driveability on demand, Subaru has further tuned its three-mode SI-Drive (Subaru Intelligent Drive) system, which can be used to adjust the engine’s characteristics to best suit a variety of driving conditions.

Aficionados of Subaru performance vehicles will be cheered by the news that a new exhaust system, with a larger centre muffler and larger diameter piping, enhances the engine’s iconic boxer ‘burble’.

The WRX STI is available from October 2010, priced at £32,995 on-the-road for both the four-and five-door variants.

Standard equipment includes keyless entry, push-button start, front log lamps, hill start assist, climate control air-conditioning, remote central locking, electric windows front and rear, an all-new radio-CD unit with a 10-speaker audio system, AUX and USB input jacks, hands-free Bluetooth® system and cruise control.

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