Used car guide

2018 Mazda Bongo: common problems and what to check

What gets flagged at MOT on 2018 Mazda Bongos, from 150 tests in 2025, plus known faults and what to look at before you buy one.

Small sample: only 150 of these were MOT tested in 2025, so treat the percentages as rough. The known faults below don't depend on it.

150MOT tests in 2025
64%pass first time (all 2018 cars: 81%)
13,900typical miles a year
35%had lights and electrics flagged

What gets flagged at MOT

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 electrics
    35% of testsRough price £10–£80

    At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.

  • Suspension
    29% 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.

  • Brakes
    29% 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.

  • Tyres
    21% 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 leaks
    16% 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.

  • Exhaust and emissions
    10% 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.

Looking at a Mazda Bongo?

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Other years

YearMOT testsMost flagged
2020110Lights and electrics 31%
2019103Suspension 36%
2017191Suspension 41%
2016300Suspension 42%
2015332Suspension 47%
2014337Suspension 49%
2013266Suspension 48%
2012221Suspension 48%
2011270Suspension 54%
2010292Suspension 51%
2009271Suspension 55%
2008332Suspension 59%
2007445Suspension 48%
2006474Suspension 49%
2005588Suspension 44%
2004515Suspension 37%
2003380Lights and electrics 36%
2002597Suspension 32%
2001542Lights and electrics 36%
2000501Suspension 38%
1999529Suspension 44%
1998365Suspension 48%
1997552Suspension 51%
1996581Suspension 56%
1995478Suspension 53%

Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 2018 Mazda Bongos registered in 2018. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score