Mazda B MOT Pass Rate
Overall pass rate across all manufacture years, based on 43 real MOT test results. Failure rate: 44.2%.
Data from official DVSA MOT testing records
Mazda B MOT Reliability Overview
The Mazda B is a rare vehicle in the UK, with 43 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 55.8% and a failure rate of 44.2%, which is slightly below the UK average of approximately 37%.
Based on this data, the Mazda B earns a "Below Average" reliability rating. The average Mazda B presents for MOT with approximately 138,771 miles on the clock.
The most common MOT failure for the Mazda B is Suspension, affecting 58.1% of all tests. Suspension failures typically involve worn bushes, leaking shock absorbers, broken coil springs, and damaged suspension arms. These affect ride quality, tyre wear, and road holding. The second most common issue is Tyres at 27.9%. Body, chassis, structure rounds out the top three at 25.6%. Together, these top 3 failure categories account for a significant portion of all MOT failures for this model.
Top failures across all manufacture years combined. Individual year pages may show different top failures.
What Fails Most
* High Fail Rate badge indicates an MOT pass rate below 65% (failure rate above 35%).
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Suspension | 60.5% | 26 |
| 2 | Tyres | 27.9% | 12 |
| 3 | Brakes | 27.9% | 12 |
| 4 | Body, Chassis, Structure | 25.6% | 11 |
| 5 | Steering | 16.3% | 7 |
| 6 | Lamps, Reflectors And Electrical Equipment | 16.3% | 7 |
| 7 | Noise, Emissions And Leaks | 14.0% | 6 |
| 8 | Seat Belts And Supplementary Restraint Systems | 7.0% | 3 |
| 9 | Visibility | 4.7% | 2 |
| 10 | Exhaust, Fuel And Emissions | 4.7% | 2 |
| 11 | Non-component Advisories | 2.3% | 1 |
| 12 | Body, Structure And General Items | 2.3% | 1 |
Failures per 10,000 Miles
avg. 138,771 miFor every 10,000 miles driven, this shows what percentage of MOT tests fail for each category. This accounts for how far cars are actually driven, not just raw pass/fail counts.
View as table
| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Suspension | 4.36 | 60.5% | 26 |
| Body & Structure | 2.01 | 27.9% | 12 |
| Tyres | 2.01 | 27.9% | 12 |
| Brakes | 2.01 | 27.9% | 12 |
| Steering | 1.17 | 16.3% | 7 |
| Lamps & Electrical | 1.17 | 16.3% | 7 |
| Noise, emissions and leaks | 1.01 | 14.0% | 6 |
| Seat Belts | 0.50 | 7.0% | 3 |
| Visibility | 0.34 | 4.7% | 2 |
| Emissions & Exhaust | 0.34 | 4.7% | 2 |
| Non-component advisories | 0.17 | 2.3% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Mazda B has 138,771 miles when tested for MOT.
📊 Mileage-Adjusted Failure Rate
How often this car fails MOT relative to how much it's driven — a fairer comparison than raw pass rate.
The Mazda B has a mileage-adjusted failure rate of 3.19% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About Mazda B MOT Data
The Mazda B is a rare vehicle in the UK, with 43 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 55.8% and a failure rate of 44.2%, which is slightly below the UK average of approximately 37%.
For Mazda B owners, these results suggest average reliability — some preparation before MOT can improve pass chances. Focus your pre-MOT checks on suspension and tyres for the best chance of a first-time pass. Use our detailed year-by-year breakdown and failure analysis below to understand how your specific B is likely to perform.
Suspension — 58.1% of failures
Suspension issues account for 58.1% of MOT failures on the Mazda B. Suspension failures typically involve worn bushes, leaking shock absorbers, broken coil springs, and damaged suspension arms. These affect ride quality, tyre wear, and road holding. Typical repair costs: £200–500. Pre-MOT check: Look for uneven tyre wear, listen for clunking over bumps, and check if the car pulls to one side. A bouncy ride suggests worn shock absorbers. Visually inspect coil springs for cracks.
Tyres — 27.9% of failures
Tyres issues account for 27.9% of MOT failures on the Mazda B. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs: £50–200 per tyre. Pre-MOT check: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating.
Body, chassis, structure — 25.6% of failures
Body, chassis, structure issues account for 25.6% of MOT failures on the Mazda B. Body and structure failures include excessive corrosion, sharp edges, loose panels, and damage to the vehicle frame. Rust is the primary concern, especially on older vehicles or those exposed to road salt. Typical repair costs: £100–500+. Pre-MOT check: Inspect sills, wheel arches, door bottoms, and the chassis for rust. Surface rust is acceptable but structural corrosion or holes will fail. Check that all doors, bonnet, and boot close securely.
Frequently Asked Questions
What is the MOT pass rate for the Mazda B?
Based on 43 (based on limited data) MOT tests in our database, the Mazda B has an overall pass rate of 55.8% (44.2% fail rate).
What are the most common MOT failures on a Mazda B?
The top 3 reasons a Mazda B fails its MOT are: 1. Suspension (58.1%), 2. Tyres (27.9%), 3. Body, chassis, structure (25.6%). Check these areas before booking your MOT.
Is the Mazda B reliable?
With a 44.2% MOT failure rate, the B is about average compared to the UK average of ~40%.
What should I check before an MOT on my Mazda B?
Based on failure data, focus on: Suspension (58.1%); Tyres (27.9%); Body, chassis, structure (25.6%). These are the areas most likely to cause a fail. Also check all lights, tyres (minimum 1.6mm tread), and windscreen condition — these are quick wins that apply to all cars.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.