BMW 420d Xdrive M Sport Auto MOT Pass Rate
Overall pass rate across all manufacture years, based on 65 real MOT test results. Failure rate: 7.7%.
Data from official DVSA MOT testing records
BMW 420d Xdrive M Sport Auto MOT Reliability Overview
The BMW 420d Xdrive M Sport Auto is a rare vehicle in the UK, with 65 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 92.3% and a failure rate of 7.7%, which is well above the UK average of approximately 37%.
Based on this data, the BMW 420d Xdrive M Sport Auto earns a "Excellent" reliability rating. The average BMW 420d Xdrive M Sport Auto presents for MOT with approximately 38,221 miles on the clock. The 2014 manufacture year performs best with a 97.3% pass rate.
The most common MOT failure for the BMW 420d Xdrive M Sport Auto is Brakes, affecting 3.1% of all tests. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. The second most common issue is Driver's View of the Road at 1.5%. Suspension rounds out the top three at 1.5%. 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 | Brakes | 3.1% | 2 |
| 2 | Seat Belts And Supplementary Restraint Systems | 1.5% | 1 |
| 3 | Tyres | 1.5% | 1 |
| 4 | Driver's View Of The Road | 1.5% | 1 |
| 5 | Suspension | 1.5% | 1 |
| 6 | Lamps, Reflectors And Electrical Equipment | 1.5% | 1 |
Failures per 10,000 Miles
avg. 38,221 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 |
|---|---|---|---|
| Brakes | 0.81 | 3.1% | 2 |
| Seat Belts | 0.40 | 1.5% | 1 |
| Tyres | 0.40 | 1.5% | 1 |
| Visibility | 0.40 | 1.5% | 1 |
| Suspension | 0.40 | 1.5% | 1 |
| Lamps & Electrical | 0.40 | 1.5% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average BMW 420d Xdrive M Sport Auto has 38,221 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 BMW 420d Xdrive M Sport Auto has a mileage-adjusted failure rate of 2.01% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About BMW 420d Xdrive M Sport Auto MOT Data
The BMW 420d Xdrive M Sport Auto is a rare vehicle in the UK, with 65 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 92.3% and a failure rate of 7.7%, which is well above the UK average of approximately 37%.
For BMW 420d Xdrive M Sport Auto owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on brakes and driver's view of the road 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 420d Xdrive M Sport Auto is likely to perform.
Brakes — 3.1% of failures
Brakes issues account for 3.1% of MOT failures on the BMW 420d Xdrive M Sport Auto. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. Typical repair costs: £150–400. Pre-MOT check: Listen for squealing or grinding noises. Check brake pedal feel — if it feels spongy or goes to the floor, have the system inspected immediately. Look at brake pad thickness through the wheel spokes (minimum 3mm).
Driver's View of the Road — 1.5% of failures
Driver's View of the Road issues account for 1.5% of MOT failures on the BMW 420d Xdrive M Sport Auto. 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.
Suspension — 1.5% of failures
Suspension issues account for 1.5% of MOT failures on the BMW 420d Xdrive M Sport Auto. 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.
Frequently Asked Questions
What is the MOT pass rate for the BMW 420d Xdrive M Sport Auto?
Based on 65 (based on limited data) MOT tests in our database, the BMW 420d Xdrive M Sport Auto has an overall pass rate of 92.3% (7.7% fail rate).
What are the most common MOT failures on a BMW 420d Xdrive M Sport Auto?
The top 3 reasons a BMW 420d Xdrive M Sport Auto fails its MOT are: 1. Brakes (3.1%), 2. Driver's View of the Road (1.5%), 3. Suspension (1.5%). Check these areas before booking your MOT.
Is the BMW 420d Xdrive M Sport Auto reliable?
With a 7.7% MOT failure rate, the 420d Xdrive M Sport Auto is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my BMW 420d Xdrive M Sport Auto?
Based on failure data, focus on: Brakes (3.1%); Driver's View of the Road (1.5%); Suspension (1.5%). 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.