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The Mitsubishi Lancer Evolution, colloquially known as the Lancer Evo or Evo, is a high-performance sedan manufactured by Mitsubishi Motors. There have been ten official versions to date, and the designation of each model is most commonly a roman numeral. All use two litre, turbocharged engines and four-wheel drive systems.

Japanese-spec cars were limited by a gentlemen's agreement to advertise no more than 280 PS (206 kW; 276 hp), a mark already reached by Evolution IV. Therefore, each subsequent version has unofficially evolved above the advertised power figures, with the Japanese-spec Evolution IX reaching an alleged output of around 321 PS (236 kW; 317 hp). Various versions available in other markets, particularly the UK, have official power outputs up to 411 PS (302 kW; 405 hp).

Evolution I

The original Lancer Evolution was to compete in the World Rally Championship. It used the 2.0 L turbocharged DOHC engine and 4WD drive train from the original Galant VR-4 in a Lancer chassis, and was sold in GSR and RS models. The latter was a stripped-down club racing version that lacked power windows and seats, anti-lock brakes, a rear wiper, and had steel wheels to weigh approximately 70 kg (154 lb) less than the 1,238 kg (2,729 lb) GSR, while the former came with all of the conveniences of a typical street car. It came with Mitsubishi's 4G63 engine producing 247 PS (182 kW; 244 hp) at 6000 rpm and 309 N·m (228 lb·ft) at 3000 rpm. 5,000 of the first generation Evolutions were sold between 1992 and 1993. Top speed is 228 km/hour (142 mph)

Evolution II

The Evolution I was upgraded in December 1993, and was produced until 1995. It consisted mainly of handling improvements, including minor wheelbase adjustments, larger swaybars, bodywork tweaks including a larger spoiler, and tyres that were 10 mm (0.4 in) wider. This Evolution also has a 50 l (13.2 US gal; 11.0 imp gal) fuel tank. Power output was increased to 256 PS (188 kW; 252 hp) from the same engine and torque was unchanged for both GSR and RS models.

Evolution III

August 1995 saw the arrival of the Evolution 3, which had several improvements over the previous models. New, more aggressive styling and a new nose moulding improved the air supply to the radiator, intercooler and brakes. New side skirts and rear bumper mouldings and a larger rear spoiler were added to reduce lift. Improved engine had higher compression ratio than before, and new turbocharger compressor (60 mm to 68 mm^[5]), which gave power output of 270 bhp (201 kW) at 6250 rpm, 309 N·m (228 lb·ft) at 3000 rpm.

Evolution IV

The Lancer platform was completely changed in 1996, and along with it the Evolution, which had become extremely popular throughout the world. The engine and transaxle was rotated 180° to better balance the weight and eliminate torque steer. There were two versions available, The RS and GSR. The RS version was produced as a competition car with a limited-slip front differential and a friction type LSD at the rear. It also came with GLX seats and a choice of either 16" or 17" OZ light weight racing wheels. The RS also had wind up windows, optional air conditioning in some models, and a few extra brace bars to strengthen the chassis, one behind the front grill and the other across the boot floor. The RS also had thinner body panels and glass. The GSR and the RS shared a new twin scroll turbocharger which helped to increase power to 280 PS (206 kW; 276 hp) at 6,500 rpm and 330 N·m (243 lb·ft) of torque at 4,000 rpm. Mitsubishi's new Active Yaw Control appeared as a factory option on the GSR model, which used steering, throttle input sensors and g sensors to computer-hydraulically control torque split individually to the rear wheels and as a result the 10000 Evolution IVs produced all sold quickly.

The Evolution IV can be distinguished by its two large fog lights in the front bumper (option on RS version), and the newly designed tail lights on the rear, which became a standard design to Evolution V, which would become yet another trademark of the Evolution series. This new generation was slightly heavier than previous Evos—the GSR in particular due to the added technology systems—but to counter this the car produced even more power—the weight of the RS being 1,260 kg (2,778 lb) and the GSR being 1,345 kg (2,965 lb).

Evolution V

Many aspects of the car were changed such as:

• The interior was upgraded in the GSR version with a better class of Recaro seat.
• The body kit had flared arches at the front and rear and a new aluminium rear spoiler replaced the IV FRP version and gave an adjustable angle of attack to alter rear down force.
• The track was widened by 10 mm (0.4 in), the wheel offset changed from ET45 to ET38 along with the wheel diameter which rose from 16" to 17" to accommodate Brembo brakes which were added to enhance braking.
• In addition the brake master cylinder bore increased by 0.3 millimetres (0.01 in).
• The engine was strengthened in a few areas and the cam duration was increased. The pistons were lighter with a smaller skirt area. 510 cc injectors were replaced with 560 cc injectors for better engine reliability due to more electrical "headroom" and the ECU was changed to include a flash ROM, allowing more boost pressure to the same TD05-HR as the Mitsubishi Evolution III and IV.

Furthermore, the turbocharger was again improved. Torque was increased to 373 N·m (275 lb·ft) at 3000 rpm. Power officially stayed the same, at 280 PS (206 kW; 276 hp), though some claim horsepower was actually somewhat higher.

Evolution VI

The Evolution VI's changes mainly focused on cooling and engine durability. It received a larger intercooler, larger oil cooler, and new pistons, along with a titanium-aluminide turbine wheel for the RS model, which was a first in a production car. also, the Evolution VI received new bodywork yet again, with the most easily spotted change in the front bumper where the huge fog lights were reduced in size and moved to the corners for better airflow. A new model was added to the GSR and RS lineup; known as the RS2, it was an RS with a few of the GSR's options. Another limited-edition RS was known as the RS Sprint, an RS tuned by Ralliart in the UK to be lighter and more powerful with 330 hp (246 kW).

Yet another special edition Evolution VI was also released in 1999: the Tommi Mäkinen Edition, named after Finnish rally driver Tommi Mäkinen that had won Mitsubishi four WRC drivers championships. It featured a different front bumper, Red/Black Recaro seats (with embossed T. Mäkinen logo), 17" Enkei white wheels, a leather Momo steering wheel and shift knob, a titanium turbine that spooled up quicker, front upper strut brace, lowered ride height (with tarmac stages in mind), and a quicker steering ratio. Amongst other colours, the Evo VI came in either red (Tommi Mak only), white, blue, black or silver with optional special decals, replicating Tommi Mäkinen's rally car's colour scheme. This car is also sometimes referred to as an Evolution 6½, Evolution 6.5, or TME for short.

Evolution VII

In 2001, Mitsubishi was forced by the FIA to race in the WRC using WRC rules for building a car instead of the Group A class rules, and thus did not need to follow homologation rules. The Evolution VII was based on the larger Lancer Cedia platform and as a result gained more weight over the Evolution VI, but Mitsubishi made up for this with multiple important chassis tweaks. The biggest change was the addition of an active center differential and a more effective limited-slip differential, while a front helical limited-slip differential was added. Torque was increased again to 385 N·m (284 lb·ft) with engine tweaks that allowed greater airflow, and horsepower officially remained at 280 PS (206 kW; 276 hp).

The introduction of the Evolution VII also marked the first time an automatic drivetrain was included within the model lineup—the GT-A. Seen as the 'gentleman's express' version of the visually similar VII GSR, the GT-A model was only produced in 2002 and had the following distinguishing interior and exterior specification: GT-A-only diamond cut finish 17-inch (430 mm) alloy wheels, clear rear light lenses and all-in-one style front headlights (later used on the Evolution VIII). The GT-A had the option of either no spoiler, the short spoiler (as later used on the Evolution VIII 260) or the thunderspoiler as used on the standard Evolution VII models. The most distinguishing feature was a smooth bonnet with no air-grills on it at all. Although offering inferior cooling capabilities, the bonnet was designed to give a cleaner line through the air with less air resistance at motorway speeds.

Interior could be specified with factory options of a deluxe velour interior, full leather or the Recaro sports seats. The GT-A interior was different in that it had chromed door handles, a different instrument panel (to show the gear selection) and chrome edged bezels around the speedo and tach. The GT-A also had additional sound deadening installed from the factory and the engine manifold and downpipe had been engineered to be quieter.

The 5-speed automatic gearbox had what Mitsubishi called "fuzzy logic", which meant that the car would learn what the driver's driving characteristics were like and would adapt the gear change timings and kick down reactions accordingly. The gears could be manually selected as with most Tiptronics via steering wheel + and - buttons (a pair both sides) or via selecting the tiptronic gate with the gear lever. Power was down a little from the standard manual cars with 264 PS (194 kW; 260 hp). The GT-A gearbox did not appear again in the Evolution VIII but has been installed in the estate version of the Evolution IX Wagon. It was replaced by the Twin Clutch SST gearbox since the introduction of Evolution X.

Evolution VIII

The Evolution VIII was modified again in 2003, this time sporting 17" grey Enkei wheels, Brembo Brakes and Bilstein shocks to handle traction and a 5-speed manual gearbox with 280 PS (202 kW; 271 hp).

The Lancer Evolution VIII MR uses slick-response Bilstein shocks for improved handling. The aluminium roof panel and other reductions in body weight have lowered the centre of gravity to produce more natural roll characteristics. Detail improvements have also been made to Mitsubishi’s own electronic four-wheel drive, to the ACD 5 + Super AYC 6 traction control, and to the Sports ABS systems. The Lancer Evolution VIII displayed at the 2003 Tokyo Motor Show took the MR designation traditionally reserved for Mitsubishi Motors high-performance models (first used for the Galant GTO). Other parts on the MR include BBS alloy wheels, the aforementioned Bilstein shocks, and an aluminium roof. In the United Kingdom, many special Evolutions were introduced, including the FQ300, FQ320, FQ340, and FQ400 variants. They came with 305, 325, 345, and 405 hp (227, 239, 254 and 298 kW), respectively. Although Mitsubishi have not confirmed the fact, it is widely rumoured that the FQ stands for "f**king quick".

The Lancer Evolution VIII was also the first Evolution to be sold in the United States.

The basic RS Edition does not come with power windows, locks, or mirrors, an audio system, rear wing, sound deading material, map lamps or an anti-lock braking system. All Evo VIII RS models sold in the US have an air conditioning system. Power windows, locks, and audio systems could be had in the RS model through the addition of the "Urban Jungle" comfort package.

Evolution IX

Mitsubishi introduced the Lancer Evolution IX in Japan on March 3, 2005. The 2.0 L 4G63 engine has MIVEC technology (variable valve timing), and a revised turbocharger design boosting official power output at the crankshaft to 291 PS (214 kW; 287 hp) and torque to 392 N·m (289 lb·ft).

Although the RS is the lightest of the group, the RS did not manage to outperform the standard IX and the MR around a road course (even if only by fractions of a second). This was purported to be due to the lack of a rear wing on the RS. In a drag race, the three models are all about even. The RS model was produced for rally and racing teams who wanted a platform to build a race car from. It is stripped of all the creature comforts, and other upgrades that drive the price up for features that the race teams would not require.

The IX MR retained the features of the Evolution VIII MR, like Bilstein shocks, a 6-speed manual transmission, a rooftop vortex generator, BBS forged wheels, HID xenon headlights, foglights, accessory gauge package, "zero lift" kit, special badging and an aluminum roof. All models continued to sport Recaro bucket seats, Brembo brakes and Momo steering wheels. Additional revisions from 2005 included a closer gear ratio for the 5-speed manual transmission, new lighter Enkei wheels on non-MR models, a redesigned front end with a more efficient air dam (the most noticeable feature are the two small oval ducts to cool the intercooler pipes), and a new rear bumper with a diffuser undersurface to smooth out the airflow coming out of the car for non-US models. In an effort to reduce the price increase on the Evolution IX model,^{[citation needed]} HID headlights were no longer standard equipment on the base IX (nor were they standard on the 2005 VIII), and were available only in the SSL package (Sun, Sound, and Leather), SE (Special Edition) and MR trims.

Although all models used the same 291 PS (214 kW; 287 hp) engine, the torque differed from one model to another. In Europe, however, the Evolution IX was advertised to have 280 PS (206 kW; 276 hp). The GSR produced 400 N·m (295 lb·ft) of torque, while the RS and GT produced 407 N·m (300 lb·ft).

In the United Kingdom, the Evolution IX used a different model scheme based on the car's horsepower. There were initially three models available: the FQ-300, FQ-320 and FQ-340 each with around 300(296/221), 320(316/236) and 340(336/250) PS(BHP/KW) respectively. An FQ-360 model was subsequently released as a successor to the Evolution VIII FQ-400. While the new FQ-360 produced less horsepower than its predecessor, it had more torque at 363 lb·ft (492 N·m) at 3200 rpm. All four models were designed to run on super unleaded petrol only. The MR FQ-360 was also released in limited numbers (only 200) in the last year of production.

Evolution X

The Lancer Evolution X sedan features a newly designed 4B11T 2.0L (1998cc) turbocharged, all-aluminium inline-4 engine. Power and torque depend on the market but all versions will have at least 280 PS (206 kW; 276 hp). (JDM version), the American market version will have slightly more. The UK models will be reworked by Mitsubishi UK, in accordance with previous MR Evolutions bearing the FQ badge. Options for the UK Evolutions are expected to be between 300 hp (220 kW) and 360 hp (270 kW).

Two versions of the car will be offered in the U.S. The Lancer Evolution MR, with 6-speed Twin Clutch Sportronic Shift Transmission (TC-SST). The other version is the GSR which will have a 5-speed manual transmission system. The car has also a new full-time four-wheel drive system named S-AWC (Super All Wheel Control), an advanced version of Mitsubishi's AWC system used in previous generations.^[18] The S-AWC uses torque vectoring technology to send different amount of torque to any wheel at any given time.

It also features Mitsubishi's new sequential semi-automatic six speed SST twin-clutch transmission with steering-mounted magnesium alloy shift paddles. It has replaced the Tiptronic automatic transmission, hence the SST version replaced the GT-A version (which was used in Evolution VII and Evolution IX Wagon). A five speed manual gearbox will also be available. Mitsubishi claims that the five speed manual transmission has always been preferred in rallying and should be very refined, resulting in a more satisfying drive.^[19] New Lancer Evolution will incorporate Mitsubishi's next generation RISE safety body.