We get another very clear preview on how the final Mitsubishi Lancer Evolution X will look like, with Mitsubishi’s latest concept vehicle, the Mitsubishi Prototype X. Lucky American visitors were able to have a look at it at the 2007 NAIAS in Detroit which will run until the 21st of this month.

The new Mitsubishi Lancer Evolution X will be built on Mitsubishi’s new GS Platform, which also underpines the latest Mitsubishi Outlander as well as the Dodge Caliber, Jeep Compass and other Chrysler Group vehicles. The engine is of a new family, not the venerable turbocharged 4G63T series which has been gracing the Mitsubishi Lancer Evolution since it’s first incarnation. The new engine is a 2.0 turbocharged unit with MIVEC variable valve timing codenamed 4B11, and is mated to either a 5-speed manual or a 6-speed automated clutch manual transmission with paddle shifters. It’s not known whether the Evo X’s automated manual will feature a single clutch or dual clutches. Final output figures of the 4B11 have not been stated, but Mitsubishi promises it will have the highest output of a stock Evo to date.

The new engine block is aluminum instead of the iron used in the 4G63T block, and is 20 kg lighter. The exhaust is located on the bulkhead side, allowing for improved placement that helps to lower the center of gravity. High inherent strength has been achieved partly through over-engineering of the open deck block, and the use of large water jackets and metal areas around each siamesed cylinder bore. All in all, the engine was designed to withstand high levels of boost.

The new Lancer is built on a longer wheelbase and wider track – but with a slightly shorter overall length than the previous model. The new Prototype X takes the sexy Lancer design further with widened wheel arches and sportier trim all round. The intercooler remains front mounted, and you have that trademark huge wing at the back – something that might just look silly on all cars except Evos and Imprezas. You also get the customary LED turn signals on the wing mirrors. Wheels are 20 inchers, which hide huge brake discs behind them.

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Mitsubishi Prototype X – future Evolution X
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Mitsubishi Lancer to be unveiled at 2007 NAIAS