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2003 Mercedes Sl55amg MOT Pass Rate

Pass rate for Sl55amg models manufactured in 2003, based on 30 real MOT test results.

70.0%
Pass Rate
30.0%
Fail Rate
30
Total Tests
52,224
Avg Mileage

Data from official DVSA MOT testing records

2003 Mercedes Sl55amg MOT Analysis

The 2003 Mercedes Sl55amg has an MOT pass rate of 70.0% based on 30 tests — slightly above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 52,224 miles on the odometer. With a 30.0% failure rate, the 2003 Sl55amg is rated as "Good" for MOT reliability.

The leading cause of MOT failure for the 2003 Mercedes Sl55amg is Tyres, responsible for 6.7% 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.

⚠ Based on limited data (30 tests)

Top failures specific to 2003 models only. The overall Sl55amg page may show different rankings.

What Fails Most

Tyres 6.7%

What Fails on This Car?

Click a category to see specific failure items.

View as table
MOT failure categories ranked by failure rate
RankFailure CategoryRate (%)Count
1Tyres6.7%2

Failures per 10,000 Miles

avg. 52,224 mi

For 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.

Tyres1.28% per 10K mi
View as table
Mileage-normalised failure rates by category
CategoryRate / 10K miRaw %Count
Tyres1.286.7%2

Mileage Statistics

52,224
Mean
47,883
Median
42,197
25th Percentile
58,723
75th Percentile
5.74% failures per 10K miles

Mileage-adjusted failure rate — accounts for how much this model year is typically driven.

About This Data

The 2003 Mercedes Sl55amg has an MOT pass rate of 70.0% based on 30 tests — slightly above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 52,224 miles on the odometer. With a 30.0% failure rate, the 2003 Sl55amg is rated as "Good" for MOT reliability.

If you own or are considering buying a 2003 Mercedes Sl55amg, 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 52,224 average miles, these vehicles are in the mid-range where component wear starts to become a factor.

Tyres — 6.7% of failures

Tyres issues account for 6.7% of MOT failures on 2003 Mercedes Sl55amg 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.

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