Mitsubishi Lancer Evolution VII-IX Problems by Year

The "CT9A" generation, spanning the Evolution VII, VIII, and IX, represents the zenith of Mitsubishi's rally-bred performance. In the UK, these models gained legendary status through the official "FQ" (F***ing Quick) variants, which were factory-tuned by Mitsubishi UK to deliver up to 400bhp. These cars offer a level of mechanical grip and steering precision that few modern performance cars can match, utilizing a sophisticated Active Yaw Control (AYC) system to manage power across the rear axle. Their market position has shifted from depreciating street racers to highly collectible icons, with the MIVEC-equipped Evolution IX being the most sought-after. Reliability is largely a product of fastidious maintenance rather than inherent fragility. The 4G63 engine is fundamentally robust but requires high-quality synthetic oil every 4,500 miles and a strict timing belt schedule every 45,000 miles or 5 years. The most common technical failure is the AYC/ACD pump, which is exposed to the elements and frequently fails due to corrosion. Furthermore, the 6-speed gearbox found in later MR and FQ models is known to be weaker than the older 5-speed unit, especially when subjected to aftermarket power increases beyond 400bhp. For a UK buyer, the absolute priority is inspecting for structural corrosion. These cars were poorly undersealed from the factory, and the rear chassis legs, strut towers, and wheel arches are notorious for rotting from the inside out in our damp, salted-road climate. A car with documented specialist service history (from names like MG Autos or NR Autosport) is infinitely more valuable than one with a main dealer history. Prospective owners should also ensure the car has been run exclusively on 97+ octane super unleaded, as using lower-grade fuel can cause catastrophic engine knock on these highly tuned units.

Select a year below to see the specific problems affecting that model year, with estimated repair costs and severity ratings.