Mercedes Slr MOT Pass Rate
Overall pass rate across all manufacture years, based on 520 real MOT test results. Failure rate: 8.3%.
Data from official DVSA MOT testing records
Mercedes Slr MOT Reliability Overview
The Mercedes Slr is a rare vehicle in the UK, with 520 MOT test results recorded in our database spanning 5 manufacture years. It has an overall MOT pass rate of 91.7% and a failure rate of 8.3%, which is well above the UK average of approximately 37%.
Based on this data, the Mercedes Slr earns a "Excellent" reliability rating. The average Mercedes Slr presents for MOT with approximately 14,360 miles on the clock. Manufacture year matters: 2008 models achieve the highest pass rate at 95.2%, while 2006 models have the lowest at 86.9%. This 8.3 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Mercedes Slr is Lamps, Reflectors and Electrical Equipment, affecting 7.3% of all tests. Lighting failures cover all external lights: headlights, tail lights, brake lights, indicators, fog lights, and reflectors. A single blown bulb will cause an MOT fail. This is one of the most preventable failure categories. The second most common issue is Tyres at 2.9%. Registration Plates and VIN rounds out the top three at 2.5%. 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 | Lamps, Reflectors And Electrical Equipment | 10.6% | 55 |
| 2 | Registration Plates And Vin | 3.1% | 16 |
| 3 | Tyres | 2.9% | 15 |
| 4 | Driver's View Of The Road | 1.0% | 5 |
| 5 | Brakes | 0.8% | 4 |
| 6 | Suspension | 0.4% | 2 |
| 7 | Exhaust, Fuel And Emissions | 0.4% | 2 |
| 8 | Seat Belts And Supplementary Restraint Systems | 0.4% | 2 |
Failures per 10,000 Miles
avg. 14,360 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 |
|---|---|---|---|
| Lamps & Electrical | 7.37 | 10.6% | 55 |
| Registration Plates and VIN | 2.14 | 3.1% | 16 |
| Tyres | 2.01 | 2.9% | 15 |
| Visibility | 0.67 | 1.0% | 5 |
| Brakes | 0.54 | 0.8% | 4 |
| Suspension | 0.27 | 0.4% | 2 |
| Emissions & Exhaust | 0.27 | 0.4% | 2 |
| Seat Belts | 0.27 | 0.4% | 2 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Mercedes Slr has 14,360 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 Mercedes Slr has a mileage-adjusted failure rate of 5.78% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Mercedes Slr MOT Data
The Mercedes Slr is a rare vehicle in the UK, with 520 MOT test results recorded in our database spanning 5 manufacture years. It has an overall MOT pass rate of 91.7% and a failure rate of 8.3%, which is well above the UK average of approximately 37%.
For Mercedes Slr owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on lamps, reflectors and electrical equipment 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 Slr is likely to perform.
Lamps, Reflectors and Electrical Equipment — 7.3% of failures
Lamps, Reflectors and Electrical Equipment issues account for 7.3% of MOT failures on the Mercedes Slr. Lighting failures cover all external lights: headlights, tail lights, brake lights, indicators, fog lights, and reflectors. A single blown bulb will cause an MOT fail. This is one of the most preventable failure categories. Typical repair costs: £5–50. Pre-MOT check: Walk around the car and check every light — headlights (dipped and main beam), side lights, tail lights, brake lights, indicators, hazard lights, reverse light, rear fog light, and number plate lights. Replace any blown bulbs before the test.
Tyres — 2.9% of failures
Tyres issues account for 2.9% of MOT failures on the Mercedes Slr. 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.
Registration Plates and VIN — 2.5% of failures
Registration Plates and VIN issues account for 2.5% of MOT failures on the Mercedes Slr. Registration Plates and VIN 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 Mercedes Slr?
Based on 520 MOT tests in our database, the Mercedes Slr has an overall pass rate of 91.7% (8.3% fail rate).
What are the most common MOT failures on a Mercedes Slr?
The top 3 reasons a Mercedes Slr fails its MOT are: 1. Lamps, Reflectors and Electrical Equipment (7.3%), 2. Tyres (2.9%), 3. Registration Plates and VIN (2.5%). Check these areas before booking your MOT.
Is the Mercedes Slr reliable?
With a 8.3% MOT failure rate, the Slr is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Mercedes Slr?
Based on failure data, focus on: Lamps, Reflectors and Electrical Equipment (7.3%); Tyres (2.9%); Registration Plates and VIN (2.5%). 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.