Used car guide

2015 Mazda Bongo: common problems and what to check

What gets flagged at MOT on 2015 Mazda Bongos, from 332 tests in 2025, plus known faults and what to look at before you buy one.

Small sample: only 332 of these were MOT tested in 2025, so treat the percentages as rough. The known faults below don't depend on it.

332MOT tests in 2025
53%pass first time (all 2015 cars: 72%)
11,300typical miles a year
74×the usual rate for rust around suspension or steering mountings

What stands out

Parts flagged at MOT more often on 2015 Mazda Bongos than on all cars registered in 2015.

  • Rust around suspension or steering mountings74× usual
    Mazda Bongo
    14.8% All 2015 cars
    0.2%

    Failed outright at MOT: 12%, against 0% of all 2015 cars. The rest were advisories or minor defects.

    Rough price £100–£450 our estimate

    At the viewing: On a straight road the steering wheel should sit straight. Listen for knocks when turning, and check the steering feels even.

  • Headlights7.3× usual
    Mazda Bongo
    15.4% All 2015 cars
    2.1%

    Failed outright at MOT: 5.4%, against 1.8% of all 2015 cars. The rest were advisories or minor defects.

    Rough price £40–£400 our estimate

    At the viewing: Check both headlights on dipped and full beam, and look for cloudy or cracked lenses.

  • Rear fog light22.2× usual
    Mazda Bongo
    11.1% All 2015 cars
    0.5%

    Failed outright at MOT: 10.8%, against 0.5% of all 2015 cars. The rest were advisories or minor defects.

    Rough price £10–£80 our estimate

    At the viewing: Ask a friend to check every light while you work the switches: indicators, brake lights, fog lights and reversing lights.

  • Engine oil leaks4.2× usual
    Mazda Bongo
    14.2% All 2015 cars
    3.4%

    Failed outright at MOT: 0.3%, against 0.1% of all 2015 cars. The rest were advisories or minor defects.

    Rough price £80–£600 our estimate

    At the viewing: Look under the engine and where the car is usually parked for fresh oil. Ask whether the leak has been looked at.

  • Exhaust system4.8× usual
    Mazda Bongo
    13% All 2015 cars
    2.7%

    Failed outright at MOT: 5.7%, against 0.7% of all 2015 cars. The rest were advisories or minor defects.

    Rough price £100–£500 (pipe or section) ClickMechanic

    At the viewing: Listen for blowing or rattling from underneath at idle, and look for black soot around joints.

By area

The share of 2015 Mazda Bongo MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Suspension
    47% 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.

  • Lights and electrics
    40% of testsRough price £10–£80

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

  • Brakes
    30% 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
    22% 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 emissions
    19% 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.

  • Oil and fluid leaks
    17% 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.

Looking at a Mazda Bongo?

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Other years

YearMOT testsMost flagged
2020110Lights and electrics 31%
2019103Suspension 36%
2018150Lights and electrics 35%
2017191Suspension 41%
2016300Suspension 42%
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 2015 Mazda Bongos registered in 2015. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score