2014 Mercedes S400 MOT Pass Rate
Pass rate for S400 models manufactured in 2014, based on 104 real MOT test results.
Data from official DVSA MOT testing records
2014 Mercedes S400 MOT Analysis
The 2014 Mercedes S400 has an MOT pass rate of 95.2% based on 104 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 54,519 miles on the odometer. With a 4.8% failure rate, the 2014 S400 is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 2014 Mercedes S400 is Tyres, responsible for 11.5% of failures. 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 range from £50–200 per tyre.
Top failures specific to 2014 models only. The overall S400 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 | Tyres | 11.5% | 12 |
Failures per 10,000 Miles
avg. 54,519 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 | 2.12 | 11.5% | 12 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 2014 Mercedes S400 has an MOT pass rate of 95.2% based on 104 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 54,519 miles on the odometer. With a 4.8% failure rate, the 2014 S400 is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 2014 Mercedes S400, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to tyres: 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. At 54,519 average miles, these vehicles are in the mid-range where component wear starts to become a factor.
Tyres — 11.5% of failures
Tyres issues account for 11.5% of MOT failures on 2014 Mercedes S400 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.