BMW 525i MOT Pass Rate
Overall pass rate across all manufacture years, based on 2,495 real MOT test results. Failure rate: 34.8%.
Data from official DVSA MOT testing records
BMW 525i MOT Reliability Overview
The BMW 525i is a niche vehicle in the UK, with 2,495 MOT test results recorded in our database spanning 9 manufacture years. It has an overall MOT pass rate of 65.2% and a failure rate of 34.8%, which is slightly above the UK average of approximately 37%.
Based on this data, the BMW 525i earns a "Good" reliability rating. The average BMW 525i presents for MOT with approximately 98,685 miles on the clock. Manufacture year matters: 2006 models achieve the highest pass rate at 77.3%, while 2001 models have the lowest at 56.4%. This 20.9 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the BMW 525i is Brakes, affecting 26.9% 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 Suspension at 24.9%. Tyres rounds out the top three at 19.4%. 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
📉 How Age Affects Reliability
MOT failure rate by vehicle age for the BMW 525i. The dashed red line marks when the manufacturer warranty typically expires (3 years).
Line chart showing MOT failure rate by vehicle age from 7 to 13 years, with warranty expiry marked at 3 years.
💡 What does the warranty cliff mean?
The BMW 525i shows a relatively stable failure rate after warranty — the change of 0% is negligible. Peak failure occurs at age 13 (51.0% fail rate).
Note: pass rates may improve for very old vehicles due to survivorship bias — only well-maintained cars remain on the road.
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 | 33.5% | 836 |
| 2 | Suspension | 30.7% | 766 |
| 3 | Tyres | 25.4% | 634 |
| 4 | Lamps, Reflectors And Electrical Equipment | 21.9% | 546 |
| 5 | Driver's View Of The Road | 8.1% | 202 |
| 6 | Steering | 4.2% | 106 |
| 7 | Exhaust, Fuel And Emissions | 2.6% | 66 |
| 8 | Seat Belts And Supplementary Restraint Systems | 2.5% | 63 |
| 9 | Registration Plates And Vin | 2.0% | 49 |
| 10 | Road Wheels | 1.9% | 47 |
| 11 | Body, Structure And General Items | 1.3% | 33 |
| 12 | Non-component Advisories | 1.1% | 27 |
| 13 | Items Not Tested | 0.4% | 9 |
Failures per 10,000 Miles
avg. 98,685 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 | 3.40 | 33.5% | 836 |
| Suspension | 3.11 | 30.7% | 766 |
| Tyres | 2.57 | 25.4% | 634 |
| Lamps & Electrical | 2.22 | 21.9% | 546 |
| Visibility | 0.82 | 8.1% | 202 |
| Steering | 0.43 | 4.2% | 106 |
| Emissions & Exhaust | 0.27 | 2.6% | 66 |
| Seat Belts | 0.26 | 2.5% | 63 |
| Registration Plates and VIN | 0.20 | 2.0% | 49 |
| Wheels | 0.19 | 1.9% | 47 |
| Body & Structure | 0.13 | 1.3% | 33 |
| Non-component advisories | 0.11 | 1.1% | 27 |
| Items Not Tested | 0.04 | 0.4% | 9 |
🚗 Similar Cars to Consider
Mileage at MOT
The average BMW 525i has 98,685 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 525i has a mileage-adjusted failure rate of 3.53% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About BMW 525i MOT Data
The BMW 525i is a niche vehicle in the UK, with 2,495 MOT test results recorded in our database spanning 9 manufacture years. It has an overall MOT pass rate of 65.2% and a failure rate of 34.8%, which is slightly above the UK average of approximately 37%.
For BMW 525i owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on brakes 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 525i is likely to perform.
Brakes — 26.9% of failures
Brakes issues account for 26.9% of MOT failures on the BMW 525i. 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).
Suspension — 24.9% of failures
Suspension issues account for 24.9% of MOT failures on the BMW 525i. 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 — 19.4% of failures
Tyres issues account for 19.4% of MOT failures on the BMW 525i. 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.
Frequently Asked Questions
What is the MOT pass rate for the BMW 525i?
Based on 2,495 MOT tests in our database, the BMW 525i has an overall pass rate of 65.2% (34.8% fail rate).
What are the most common MOT failures on a BMW 525i?
The top 3 reasons a BMW 525i fails its MOT are: 1. Brakes (26.9%), 2. Suspension (24.9%), 3. Tyres (19.4%). Check these areas before booking your MOT.
Is the BMW 525i reliable?
With a 34.8% MOT failure rate, the 525i is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my BMW 525i?
Based on failure data, focus on: Brakes (26.9%); Suspension (24.9%); Tyres (19.4%). 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.