2012 Mercedes Sl 63 MOT Pass Rate
Pass rate for Sl 63 models manufactured in 2012, based on 102 real MOT test results.
Data from official DVSA MOT testing records
2012 Mercedes Sl 63 MOT Analysis
The 2012 Mercedes Sl 63 has an MOT pass rate of 83.3% based on 102 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 28,981 miles on the odometer. With a 16.7% failure rate, the 2012 Sl 63 is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 2012 Mercedes Sl 63 is Noise, emissions and leaks, responsible for 4.9% of failures. 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 range from £100–1,000+. Tyres is the second most common issue at 2.0%.
Top failures specific to 2012 models only. The overall Sl 63 page may show different rankings.
What Fails Most
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Noise, Emissions And Leaks | 4.9% | 5 |
| 2 | Tyres | 2.0% | 2 |
Failures per 10,000 Miles
avg. 28,981 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 |
|---|---|---|---|
| Noise, emissions and leaks | 1.69 | 4.9% | 5 |
| Tyres | 0.68 | 2.0% | 2 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 2012 Mercedes Sl 63 has an MOT pass rate of 83.3% based on 102 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 28,981 miles on the odometer. With a 16.7% failure rate, the 2012 Sl 63 is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 2012 Mercedes Sl 63, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to noise, emissions and leaks: 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. With relatively low average mileage of 28,981 miles, many of these vehicles are still in good mechanical condition.
Noise, emissions and leaks — 4.9% of failures
Noise, emissions and leaks issues account for 4.9% of MOT failures on 2012 Mercedes Sl 63 models. 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.
Tyres — 2.0% of failures
Tyres issues account for 2.0% of MOT failures on 2012 Mercedes Sl 63 models. 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.