2018 Mazda Bongo: common problems and MOT failures
What MOT testers find on the Mazda Bongo first registered in 2018: we looked at the 484 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.
Small sample: there were only 484 MOTs of these cars during 2023–2025, so treat the percentages as rough. The known faults below don't depend on it.
What goes wrong more than usual on a 2018 Mazda Bongo?
Parts flagged at MOT more often on the 2018 Mazda Bongo than on all cars registered in 2018.
- Headlights13.4× usualMazda Bongo13.4% All 2018 cars1%
Failed outright at MOT: 4.8%, against 0.9% of all 2018 cars. The rest were advisories or minor defects.
Rough price £40–£400 our estimateAt the viewing: Check both headlights on dipped and full beam, and look for cloudy or cracked lenses.
- Engine oil leaks8.7× usualMazda Bongo8.7% All 2018 cars1%
Failed outright at MOT: 0.2%, against 0% of all 2018 cars. The rest were advisories or minor defects.
Rough price £80–£600 our estimateAt the viewing: Look under the engine and where the car is usually parked for fresh oil. Ask whether the leak has been looked at.
- Rear fog light38× usualMazda Bongo7.6% All 2018 cars0.2%
Failed outright at MOT: 7.4%, against 0.2% of all 2018 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.
- Ball joint dust cover17.5× usualMazda Bongo7% All 2018 cars0.4%
Failed outright at MOT: 3.5%, 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.
- Brake lights7.8× usualMazda Bongo6.2% All 2018 cars0.8%
Failed outright at MOT: 5.4%, against 0.6% of all 2018 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.
Common 2018 Mazda Bongo MOT failures and advisories
The share of 2018 Mazda Bongo MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.
- Lights and electrics34% of testsRough price £10–£80
At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.
- Suspension30% 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.
- Brakes26% 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.
- Tyres19% 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.
- Oil and fluid leaks11% of testsRough price £80–£600
At the viewing: Look under the engine and on the ground where the car is usually parked for fresh oil or fluid.
- 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.
Questions to ask the seller before buying a 2018 Mazda Bongo
Ask before you travel to see it. A seller who knows the car will have answers, and receipts.
- Any recent work on the headlights? (Flagged at MOT 13.4× as often on the 2018 Mazda Bongo as on other cars the same age.)
- Any recent work on the engine oil leaks? (Flagged at MOT 8.7× as often on the 2018 Mazda Bongo as on other cars the same age.)
- Any recent work on the rear fog light? (Flagged at MOT 38× as often on the 2018 Mazda Bongo as on other cars the same age.)
- Can I see the service history and receipts for any big jobs?
Looking at a Mazda Bongo?
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 Mazda Bongo compared
| Year | MOT tests | Most flagged |
|---|---|---|
| 2021 | 172 | Lights and electrics 31% |
| 2020 | 364 | Lights and electrics 30% |
| 2019 | 369 | Lights and electrics 36% |
| 2017 | 674 | Suspension 38% |
| 2016 | 1,065 | Suspension 40% |
| 2015 | 1,159 | Suspension 40% |
| 2014 | 1,186 | Suspension 46% |
| 2013 | 993 | Suspension 45% |
| 2012 | 858 | Suspension 47% |
| 2011 | 1,005 | Suspension 50% |
| 2010 | 1,177 | Suspension 49% |
| 2009 | 1,061 | Suspension 52% |
| 2008 | 1,416 | Suspension 53% |
| 2007 | 1,825 | Suspension 50% |
| 2006 | 1,793 | Suspension 51% |
| 2005 | 2,116 | Suspension 44% |
| 2004 | 1,638 | Suspension 39% |
| 2003 | 1,125 | Suspension 34% |
| 2002 | 1,534 | Suspension 33% |
| 2001 | 1,400 | Lights and electrics 38% |
| 2000 | 1,311 | Suspension 36% |
| 1999 | 1,306 | Suspension 40% |
| 1998 | 874 | Suspension 47% |
| 1997 | 1,313 | Suspension 52% |
| 1996 | 1,401 | Suspension 53% |
| 1995 | 1,136 | Suspension 54% |
Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of Mazda Bongo cars first registered in 2018. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score