Mazda 3 Sport Diesel 143 MOT Pass Rate
Overall pass rate across all manufacture years, based on 38 real MOT test results. Failure rate: 15.8%.
Data from official DVSA MOT testing records
Mazda 3 Sport Diesel 143 MOT Reliability Overview
The Mazda 3 Sport Diesel 143 is a rare vehicle in the UK, with 38 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 84.2% and a failure rate of 15.8%, which is well above the UK average of approximately 37%.
Based on this data, the Mazda 3 Sport Diesel 143 earns a "Excellent" reliability rating. The average Mazda 3 Sport Diesel 143 presents for MOT with approximately 66,463 miles on the clock. The 2007 manufacture year performs best with a 85.7% pass rate.
The most common MOT failure for the Mazda 3 Sport Diesel 143 is Tyres, affecting 13.2% of all tests. 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. The second most common issue is Suspension at 13.2%. Driver's View of the Road rounds out the top three at 5.3%. 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
Pass Rate by Manufacture Year
* 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 | 15.8% | 6 |
| 2 | Tyres | 15.8% | 6 |
| 3 | Driver's View Of The Road | 7.9% | 3 |
| 4 | Registration Plates And Vin | 2.6% | 1 |
Failures per 10,000 Miles
avg. 66,463 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 | 2.38 | 15.8% | 6 |
| Tyres | 2.38 | 15.8% | 6 |
| Visibility | 1.19 | 7.9% | 3 |
| Registration Plates and VIN | 0.40 | 2.6% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Mazda 3 Sport Diesel 143 has 66,463 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 3 Sport Diesel 143 has a mileage-adjusted failure rate of 2.38% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About Mazda 3 Sport Diesel 143 MOT Data
The Mazda 3 Sport Diesel 143 is a rare vehicle in the UK, with 38 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 84.2% and a failure rate of 15.8%, which is well above the UK average of approximately 37%.
For Mazda 3 Sport Diesel 143 owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on tyres and suspension 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 3 Sport Diesel 143 is likely to perform.
Tyres — 13.2% of failures
Tyres issues account for 13.2% of MOT failures on the Mazda 3 Sport Diesel 143. 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.
Suspension — 13.2% of failures
Suspension issues account for 13.2% of MOT failures on the Mazda 3 Sport Diesel 143. 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.
Driver's View of the Road — 5.3% of failures
Driver's View of the Road issues account for 5.3% of MOT failures on the Mazda 3 Sport Diesel 143. Driver's View of the Road issues are a common cause of MOT failure. Regular inspection and maintenance of these components helps ensure your vehicle passes its MOT. Typical repair costs: £100–400. Pre-MOT check: Have this system checked during regular servicing. Look for warning signs like unusual noises, vibrations, or dashboard warning lights.
Frequently Asked Questions
What is the MOT pass rate for the Mazda 3 Sport Diesel 143?
Based on 38 (based on limited data) MOT tests in our database, the Mazda 3 Sport Diesel 143 has an overall pass rate of 84.2% (15.8% fail rate).
What are the most common MOT failures on a Mazda 3 Sport Diesel 143?
The top 3 reasons a Mazda 3 Sport Diesel 143 fails its MOT are: 1. Tyres (13.2%), 2. Suspension (13.2%), 3. Driver's View of the Road (5.3%). Check these areas before booking your MOT.
Is the Mazda 3 Sport Diesel 143 reliable?
With a 15.8% MOT failure rate, the 3 Sport Diesel 143 is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Mazda 3 Sport Diesel 143?
Based on failure data, focus on: Tyres (13.2%); Suspension (13.2%); Driver's View of the Road (5.3%). 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.