Mazda Bongo MOT Failures
An analysis of 102,487 real DVSA MOT tests on the Mazda Bongo — what fails, how often, and how that compares to every other car on UK roads. Generations covered: SK22M (1999–2010).
Where the Mazda Bongo fails its MOT
The single biggest MOT failure point on the Mazda Bongo is structural corrosion — this model is 27 times more likely to fail on this item than the average car on UK roads. That makes it a significant weak point for anyone buying or owning this model. Across 102,487 MOT tests, 11.55% of all Mazda Bongo tests recorded this as a failure.
Bodywork failures usually mean structural corrosion — not cosmetic rust, but rot that affects the car's structural integrity. Check sills, subframes, and chassis rails carefully, especially on older examples.
Other notable weak points include front or rear fog lamp emitted colour, position... (99x the fleet average), towbar fault (77x the fleet average), emissions failure (37x the fleet average), and abs fault (45x the fleet average). These ratios compare the Mazda Bongo's failure rate on each item against the national average for all cars tested — a ratio of 10x means this model fails ten times more often than a typical car.
The failures span 4 categories: Bodywork, Lights & Electrics, Exhaust & Emissions, Suspension. If you're inspecting a Mazda Bongo before purchase, these are the areas to focus on — and if any have been flagged as advisories on a previous MOT, they're likely to become failures in the near future.
How failures change with mileage
The Mazda Bongo's weak points shift as the car covers more miles. Understanding these patterns helps you know what to expect — and what to budget for — at each stage of ownership.
Under 60,000 miles
At this mileage, most failures are either design-related or caused by age rather than wear. Components like bushes and drop links may not have been replaced yet, and original-fit parts can deteriorate even on low-mileage cars that spend a lot of time sitting.
For the Mazda Bongo specifically, the DVSA data shows the most common failures at this mileage are headlight fault (20x the average) and significant brake effort recorded with no brake... (5.5x).
60,000 to 100,000 miles
This is where routine wear items start to show up. Brake components, tyres, and exhaust parts have done serious work by this point. Cars that have been well serviced will show fewer of these failures — this mileage band is where good maintenance really separates the well-kept from the neglected.
For the Mazda Bongo specifically, the DVSA data shows the most common failures at this mileage are front or rear fog lamp emitted colour, position... (99x the average) and towbar fault (77x). emissions failure (37x) and abs fault (23x) also appear frequently.
Over 100,000 miles
High-mileage cars accumulate failures across multiple systems. The key question isn't whether things will need doing — they will — but whether the car has been maintained well enough to keep on top of them. Look for a consistent service history and recent MOT passes with minimal advisories.
For the Mazda Bongo specifically, the DVSA data shows the most common failures at this mileage are front or rear fog lamp emitted colour, position... (77x the average) and towbar fault (53x). anti-roll bar links worn (52x) and suspension ball joints worn (46x) also appear frequently.
The shift from headlight fault at lower mileages to front or rear fog lamp emitted colour, position... at higher mileages is typical — early failures tend to be design or factory-related, while high-mileage failures reflect accumulated mechanical wear. A car that's been well maintained will usually dodge the worst of both.
Known issues beyond the MOT
An MOT only tests roadworthiness at a single point in time — it won't catch developing faults, intermittent problems, or issues that haven't yet reached the failure threshold. These are the issues that Mazda Bongo specialists and owners flag most frequently, drawn from manufacturer technical bulletins, workshop data, and verified owner reports.
Subframe corrosion and mounting point failure Dangerous
The Bongo's subframe and suspension mounting points are severely prone to corrosion, with MOT data showing failure rates up to 80 times the national average. Affects SK22M; typical independent garage repair cost is £2,000–£4,000.
General structural corrosion Major
The Bongo suffers from widespread structural corrosion that significantly exceeds typical vehicle corrosion rates, with MOT data showing failure rates 27 times the national average. Affects SK22M; typical independent garage repair cost is £1,500–£3,000.
Suspension component wear and failure Major
Suspension pins, bushes, and joints wear excessively on the Bongo, with MOT failure rates nearly 20 times the national average. Affects SK22M; typical independent garage repair cost is £200–£600.
Power steering system failure
Power steering fluid leaks and system malfunctions occur at 20 times the fleet average rate on the Bongo. Affects SK22M; typical independent garage repair cost is £300–£600.
For the complete picture — including repair costs across independent, specialist, and dealer garages — see the full Mazda Bongo common problems breakdown.
What to check before buying a Mazda Bongo
Based on the MOT failure data and known issues above, here's what to prioritise when inspecting a Mazda Bongo:
Bodywork — check for structural corrosion, towbar fault. Lights & Electrics — check for front or rear fog lamp emitted colour, position..., obligatory rear fog lamp missing, or a front or.... Exhaust & Emissions — check for emissions failure.
Beyond the MOT items, ask specifically about subframe corrosion and mounting point failure and general structural corrosion. These won't show up on a standard MOT but can be expensive to fix — repairs start from £2,000. A specialist pre-purchase inspection is worth the investment on this model.
Always check the car's full MOT history for patterns — recurring advisories often become failures within 12 months. And verify the service history to confirm maintenance has been kept up to schedule. Enter any reg into our free car check to see the complete picture.
Looking at a specific Mazda Bongo?
Enter the reg to see its full MOT history, mileage records, write-off status, and finance checks.
Mazda Bongo MOT FAQs
What are the most common MOT failures on a Mazda Bongo?
Based on 102,487 DVSA MOT tests, the most common failure is structural corrosion — at 27x the national fleet average. Other frequent failures include front or rear fog lamp emitted colour, position... and towbar fault.
Is the Mazda Bongo reliable based on MOT data?
The Mazda Bongo has 16 MOT failure categories above the fleet average. Specialists also flag subframe corrosion and mounting point failure as a concern. A pre-purchase inspection and service history check are recommended.
What MOT failures should I expect at high mileage?
Above 100,000 miles, the Mazda Bongo most commonly fails on front or rear fog lamp emitted colour, position... and towbar fault. Under 60,000 miles, the main issues are headlight fault and significant brake effort recorded with no brake....
How do I check a Mazda Bongo's MOT history?
Enter the registration number into our free car check above. You'll see every MOT test result, advisories and failures, mileage readings, write-off status, and finance checks.
MOT failure data sourced from DVSA bulk test records via data.gov.uk. Ratios compare this model's failure rate against the national fleet average. Known issues sourced from manufacturer bulletins, specialist workshops, and verified owner reports.