This 2015 Outlander diesel is most commonly fitted with Mitsubishi's 2.2-litre turbo-diesel and a 6-speed manual box, which is robust when properly maintained. Diesels of this age are reliable on long runs but can suffer from DPF and EGR carbon buildup if mostly used for short urban trips; the manual clutch and gearbox are wear items to watch on higher-mileage examples. The Outlander was offered with an optional third row on many trims, and there is also a PHEV version for later buyers — make sure the listing matches the diesel/manual spec you expect.

• DPF behaviour: look for frequent forced-regeneration events, persistent warning lights or excessive soot smoke after acceleration (signs of blocked DPF/EGR).
• Clutch bite and gearbox: check for clutch slip, high engagement point and smooth gear selection through all ratios on a test drive.
• Turbo health: listen for whining, check for black/blue smoke under acceleration and feel for lag — turbo oil leaks or wasted turbo can be costly.
• EGR and intake carbon: rough idle or poor throttle response can indicate heavy carbon build-up on the EGR/intake on older diesels.
• Underbody and suspension mounts: inspect rear subframe, suspension-arm bushes and exhaust hangers for corrosion or wear, especially if the car has seen salted winter roads or off-road use.