UK Buyer Reliability Guide3 Known Faults Documented

Mitsubishi Lancer Evolution X Common Problems & Reliability

The final Evo is a hugely capable AWD performance saloon, but it is now a specialist enthusiast buy rather than a cheap fast Mitsubishi. The best cars have specialist histories, sensible modifications and proof that drivetrain fluids have been treated as consumables rather than lifetime fills.

6
Generation Periods
3
Known Issues
2
Critical Faults
1
Moderate Issues

Select a Model Year Period

Detailed fault breakdown, symptoms, and estimated repair bills by production year.

Most Common Mitsubishi Lancer Evolution X Faults & Repair Costs

High Risk

AYC Pump Corrosion and Failure

Est. Cost£600–£1,500

The Active Yaw Control pump is mounted in a vulnerable position and corrodes badly on UK cars, bringing warning lights and expensive drivetrain-control faults.

Warning Signs:

AYC or ASC warning lights, Drive mode faults, Pump noise or no response from the system

High Risk

SST Twin-Clutch Judder or Failure

Est. Cost£1,500–£4,000

SST cars are very sensitive to correct fluid and calibration; neglected boxes can judder, skip gears or fail outright with huge repair bills.

Warning Signs:

Jerky pull-away, Refusal to select gears, Transmission warning or limp mode

Moderate Risk

Rear Subframe and Underbody Corrosion

Est. Cost£400–£2,000

Even specialist-owned Evo Xs can rust underneath in the UK, particularly around the rear subframe and suspension pick-up points.

Warning Signs:

Heavy rust on rear subframe, Corrosion advisories on MOT history, Fresh underseal without photo evidence

Essential Pre-Purchase Step

Buying a used Mitsubishi Lancer Evolution X? Always check for hidden finance and write-off history.

Mechanical problems are only half the battle. Over 1 in 3 UK used cars checked have unpaid finance or accident write-off records that could cause you to lose the car or thousands in value.

Inspection Checklist for Mitsubishi Lancer Evolution X Buyers

Manual cars are mechanically simpler; SST cars need proper Mitsubishi SST fluid history and should feel smooth, not jerky or reluctant.
Inspect the AYC pump area and rear underbody for corrosion because UK road salt is especially hard on these cars.
Be very cautious of hard-used or badly modified examples; track abuse shows up quickly in tyres, brakes, drivetrain fluids and accident repairs.