2018 Mitsubishi ASX: common problems and MOT failures
What MOT testers find on the Mitsubishi ASX first registered in 2018: we looked at the 2,189 MOTs these cars had during 2025. Plus known faults and what to look at before you buy one.
What goes wrong more than usual on a 2018 Mitsubishi ASX?
Parts flagged at MOT more often on the 2018 Mitsubishi ASX than on all cars registered in 2018.
- Brake pads1.6× usualMitsubishi ASX18% All 2018 cars11%
Failed outright at MOT: 3.6%, against 2.1% of all 2018 cars. The rest were advisories or minor defects.
Rough price £75–£175 (one axle) ClickMechanicAt the viewing: Listen for squealing or grinding when braking, and look through the wheel at how much pad is left.
- Rigid brake pipes8.2× usualMitsubishi ASX6.6% All 2018 cars0.8%
Failed outright at MOT: 0.5%, against 0.1% of all 2018 cars. The rest were advisories or minor defects.
Rough price £100–£400 our estimateAt the viewing: Ask to see underneath, or check the MOT advisories: corroded brake or fuel pipes get worse every year and fail the MOT when they do.
- Anti-roll bar bushes and joints14× usualMitsubishi ASX2.8% All 2018 cars0.2%
Failed outright at MOT: 0.4%, against 0% of all 2018 cars. The rest were advisories or minor defects.
Rough price £100–£280 (pair of drop links) CheckatradeAt the viewing: Drive slowly over bumps and listen for a knock or rattle from the front. Worn anti-roll bar links are a cheap fix.
- Anti-roll bar link joints6.2× usualMitsubishi ASX3.1% All 2018 cars0.5%
Failed outright at MOT: 1.2%, against 0.2% of all 2018 cars. The rest were advisories or minor defects.
Rough price £60–£150 (one joint) ClickMechanicAt the viewing: Listen for knocking over bumps and check the rubber boots behind the wheels aren't split.
Common 2018 Mitsubishi ASX MOT failures and advisories
The share of 2018 Mitsubishi ASX MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.
- Brakes28% of testsRough price £150–£350
At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.
- Tyres25% of testsRough price £70–£150
At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.
- Suspension12% of testsRough price £120–£400
At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.
- Wipers, windscreen and mirrors5% of testsRough price £15–£250
At the viewing: Check for chips in the driver's view, and test the wipers and washers.
- Lights and electrics5% of testsRough price £10–£80
At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.
- Seats and seatbelts3% of testsRough price £80–£250
At the viewing: Pull each seatbelt sharply. It should lock, and retract cleanly.
Known faults on the 2018 Mitsubishi ASX
Reported by owners, mechanics and buying guides for this model and age. Check which engine the car has, as some apply to one engine only.
- Cars with a glass roof
Glass roof rattles
Tabs around the glass roof can come unstuck in hot weather and rattle.
At the viewing: Listen around the roof on a rough road.
Source: What Car?: used Mitsubishi ASX (2010 on) reliability
Questions to ask the seller before buying a 2018 Mitsubishi ASX
Ask before you travel to see it. A seller who knows the car will have answers, and receipts.
- Any recent work on the brake pads? (Flagged at MOT 1.6× as often on the 2018 Mitsubishi ASX as on other cars the same age.)
- Any recent work on the rigid brake pipes? (Flagged at MOT 8.2× as often on the 2018 Mitsubishi ASX as on other cars the same age.)
- Any recent work on the anti-roll bar bushes and joints? (Flagged at MOT 14× as often on the 2018 Mitsubishi ASX as on other cars the same age.)
- Can I see the service history and receipts for any big jobs?
Looking at a Mitsubishi ASX?
Check the actual car: its own MOT history, mileage and what to ask the seller. Free, no sign-up.
Other years
Every year of the Mitsubishi ASX compared
| Year | MOT tests | Most flagged |
|---|---|---|
| 2021 | 510 | Tyres 19% |
| 2020 | 1,486 | Tyres 22% |
| 2019 | 1,613 | Tyres 27% |
| 2017 | 3,974 | Brakes 34% |
| 2016 | 3,181 | Brakes 34% |
| 2015 | 4,464 | Brakes 39% |
| 2014 | 3,650 | Brakes 42% |
| 2013 | 2,345 | Suspension 46% |
| 2012 | 2,009 | Suspension 49% |
| 2011 | 1,928 | Suspension 55% |
| 2010 | 1,419 | Suspension 57% |
Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2025, counting the MOTs of Mitsubishi ASX cars first registered in 2018. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score