2014 Isuzu D-MAX: common problems and what to check
What gets flagged at MOT on 2014 Isuzu D-MAXs, from 3,740 tests in 2025, plus known faults and what to look at before you buy one.
What stands out
Parts flagged at MOT more often on 2014 Isuzu D-MAXs than on all cars registered in 2014.
- Rigid brake pipes6.1× usualIsuzu D-MAX22% All 2014 cars3.6%
Failed outright at MOT: 3.9%, against 0.5% of all 2014 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.
- Wheel bearings17.5× usualIsuzu D-MAX19.3% All 2014 cars1.1%
Failed outright at MOT: 2.6%, against 0.4% of all 2014 cars. The rest were advisories or minor defects.
Rough price £120–£300 (one bearing) ClickMechanicAt the viewing: Listen for a hum or growl that changes as you steer at speed.
- Exhaust system3.4× usualIsuzu D-MAX12.3% All 2014 cars3.6%
Failed outright at MOT: 4.4%, against 1% of all 2014 cars. The rest were advisories or minor defects.
Rough price £100–£500 (pipe or section) ClickMechanicAt the viewing: Listen for blowing or rattling from underneath at idle, and look for black soot around joints.
- Ball joint2.6× usualIsuzu D-MAX11.1% All 2014 cars4.2%
Failed outright at MOT: 4.8%, against 2.3% of all 2014 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.
- Rear fog light12.2× usualIsuzu D-MAX7.3% All 2014 cars0.6%
Failed outright at MOT: 7.2%, against 0.5% of all 2014 cars. The rest were advisories or minor defects.
Rough price £10–£80 our estimateAt the viewing: Ask a friend to check every light while you work the switches: indicators, brake lights, fog lights and reversing lights.
Suspension arm bushes and joints: 0.8% here, against 8.2% of all 2014 cars. Brake discs: 6.2% here, against 13.6% of all 2014 cars.
By area
The share of 2014 Isuzu D-MAX MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.
- Lights and electrics41% of testsRough price £10–£80
At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.
- Brakes35% 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.
- Suspension34% 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.
- Tyres22% 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.
- Exhaust and emissions14% of testsRough price £100–£1,200
At the viewing: Look for black soot in the tailpipe, listen for blowing from the exhaust and check for engine or DPF warning lights.
- Wipers, windscreen and mirrors11% of testsRough price £15–£250
At the viewing: Check for chips in the driver's view, and test the wipers and washers.
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Other years
| Year | MOT tests | Most flagged |
|---|---|---|
| 2022 | 3,503 | Tyres 23% |
| 2021 | 3,138 | Tyres 22% |
| 2020 | 2,541 | Lights and electrics 24% |
| 2019 | 3,799 | Lights and electrics 27% |
| 2018 | 3,817 | Lights and electrics 30% |
| 2017 | 4,249 | Lights and electrics 31% |
| 2016 | 4,181 | Lights and electrics 38% |
| 2015 | 4,432 | Lights and electrics 38% |
| 2013 | 2,578 | Lights and electrics 45% |
| 2012 | 1,143 | Lights and electrics 45% |
Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 2014 Isuzu D-MAXs registered in 2014. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score