BMW 420d Xdrive M Sport Mhev Auto MOT Pass Rate
Overall pass rate across all manufacture years, based on 1,110 real MOT test results. Failure rate: 8.8%.
Data from official DVSA MOT testing records
BMW 420d Xdrive M Sport Mhev Auto MOT Reliability Overview
The BMW 420d Xdrive M Sport Mhev Auto is a niche vehicle in the UK, with 1,110 MOT test results recorded in our database spanning 3 manufacture years. It has an overall MOT pass rate of 91.2% and a failure rate of 8.8%, which is well above the UK average of approximately 37%.
Based on this data, the BMW 420d Xdrive M Sport Mhev Auto earns a "Excellent" reliability rating. The average BMW 420d Xdrive M Sport Mhev Auto presents for MOT with approximately 30,018 miles on the clock. Manufacture year matters: 2022 models achieve the highest pass rate at 100.0%, while 2020 models have the lowest at 90.2%. This 9.8 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the BMW 420d Xdrive M Sport Mhev Auto is Tyres, affecting 12.3% 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 Noise, emissions and leaks at 0.5%. Visibility rounds out the top three at 0.5%. 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
Best Year to Buy
📈 How Each Vintage Ages
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 | Tyres | 12.3% | 137 |
| 2 | Noise, Emissions And Leaks | 0.5% | 6 |
| 3 | Visibility | 0.5% | 5 |
| 4 | Lamps, Reflectors And Electrical Equipment | 0.5% | 5 |
| 5 | Road Wheels | 0.3% | 3 |
| 6 | Non-component Advisories | 0.3% | 3 |
| 7 | Identification Of The Vehicle | 0.2% | 2 |
| 8 | Suspension | 0.2% | 2 |
| 9 | Brakes | 0.2% | 2 |
Failures per 10,000 Miles
avg. 30,018 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 |
|---|---|---|---|
| Tyres | 4.11 | 12.3% | 137 |
| Noise, emissions and leaks | 0.18 | 0.5% | 6 |
| Visibility | 0.15 | 0.5% | 5 |
| Lamps & Electrical | 0.15 | 0.5% | 5 |
| Wheels | 0.09 | 0.3% | 3 |
| Non-component advisories | 0.09 | 0.3% | 3 |
| Identification of the vehicle | 0.06 | 0.2% | 2 |
| Suspension | 0.06 | 0.2% | 2 |
| Brakes | 0.06 | 0.2% | 2 |
🚗 Similar Cars to Consider
Mileage at MOT
The average BMW 420d Xdrive M Sport Mhev Auto has 30,018 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 Mhev Auto has a mileage-adjusted failure rate of 2.93% 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 Mhev Auto MOT Data
The BMW 420d Xdrive M Sport Mhev Auto is a niche vehicle in the UK, with 1,110 MOT test results recorded in our database spanning 3 manufacture years. It has an overall MOT pass rate of 91.2% and a failure rate of 8.8%, which is well above the UK average of approximately 37%.
For BMW 420d Xdrive M Sport Mhev Auto owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on tyres and noise, emissions and leaks 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 Mhev Auto is likely to perform.
Tyres — 12.3% of failures
Tyres issues account for 12.3% of MOT failures on the BMW 420d Xdrive M Sport Mhev Auto. 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.
Noise, emissions and leaks — 0.5% of failures
Noise, emissions and leaks issues account for 0.5% of MOT failures on the BMW 420d Xdrive M Sport Mhev Auto. Emissions failures occur when exhaust gases exceed legal limits for carbon monoxide (CO), hydrocarbons (HC), or particulate matter (diesel). Common causes include faulty oxygen sensors, clogged catalytic converters, or DPF issues on diesel vehicles. Typical repair costs: £100–1,000+. Pre-MOT check: If the engine management light is on, get it diagnosed before the MOT. For diesel cars, ensure the DPF has completed a regeneration cycle. Regular servicing and using premium fuel before the test can help.
Visibility — 0.5% of failures
Visibility issues account for 0.5% of MOT failures on the BMW 420d Xdrive M Sport Mhev Auto. Visibility failures relate to the windscreen, wipers, washers, mirrors, and view-obstructing damage. Cracks in the windscreen swept area, ineffective wipers, or empty washer bottles are common causes. Typical repair costs: £10–300. Pre-MOT check: Check the windscreen for chips and cracks — damage larger than 10mm in the driver's swept area or 40mm elsewhere will fail. Test washers and wipers. Ensure both door mirrors are intact and adjustable.
Frequently Asked Questions
What is the MOT pass rate for the BMW 420d Xdrive M Sport Mhev Auto?
Based on 1,110 MOT tests in our database, the BMW 420d Xdrive M Sport Mhev Auto has an overall pass rate of 91.2% (8.8% fail rate).
What are the most common MOT failures on a BMW 420d Xdrive M Sport Mhev Auto?
The top 3 reasons a BMW 420d Xdrive M Sport Mhev Auto fails its MOT are: 1. Tyres (12.3%), 2. Noise, emissions and leaks (0.5%), 3. Visibility (0.5%). Check these areas before booking your MOT.
Is the BMW 420d Xdrive M Sport Mhev Auto reliable?
With a 8.8% MOT failure rate, the 420d Xdrive M Sport Mhev 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 Mhev Auto?
Based on failure data, focus on: Tyres (12.3%); Noise, emissions and leaks (0.5%); Visibility (0.5%). 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.