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2011 Mercedes Slk 350 — MOT History by Age

How cars manufactured in 2011 perform at MOT as they age

15 years
Current Age
86.6%
Latest Pass Rate
1,021
Total Tests (All Years)
43,495 mi
Avg Mileage (Latest)

Data from official DVSA MOT testing records

Best vintage for Slk 350

Compared to Average at Age 9

This car: 86.6%
Average: 62.0%

✅ 24.6% above average (15872 models compared)

How This Car Ages

Pass rate progression for the 2011 Mercedes Slk 350 as it ages.

3 yrs87.9%
4 yrs89.5%
5 yrs89.1%
6 yrs86.7%
7 yrs81.5%
8 yrs83.3%
9 yrs86.6%

Bar chart showing pass rate by car age from 3 to 9 years

Fail Rate %
📊 View as table
AgePass RateTests
3 yrs87.9%173
4 yrs89.5%181
5 yrs89.1%183
6 yrs86.7%150
7 yrs81.5%108
8 yrs83.3%114
9 yrs86.6%112

Pass Rate Trend

How the 2011 Mercedes Slk 350 pass rate changes as it ages, from first MOT to most recent.

Trend shows improving over 7 years

Pass Rate %
📊 View as table
BuiltPass RateTests
2020 (9 yrs)86.6%112
2019 (8 yrs)83.3%114
2018 (7 yrs)81.5%108
2017 (6 yrs)86.7%150
2016 (5 yrs)89.1%183
2015 (4 yrs)89.5%181
2014 (3 yrs)87.9%173

Year-by-Year MOT Results

2014
87.9%
Age (yrs) 3Tests 173Avg Mileage 18,649Top Failure Tyres — 17.3%
2015
89.5%
Age (yrs) 4Tests 181Avg Mileage 22,658Top Failure Tyres — 12.2%
2016
89.1%
Age (yrs) 5Tests 183Avg Mileage 27,447Top Failure Tyres — 7.7%
2017
86.7%
Age (yrs) 6Tests 150Avg Mileage 32,122Top Failure Tyres — 14.7%
2018
81.5%
Age (yrs) 7Tests 108Avg Mileage 35,760Top Failure Tyres — 18.5%
2019
83.3%
Age (yrs) 8Tests 114Avg Mileage 38,537Top Failure Tyres — 16.7%
2020
86.6%
Age (yrs) 9Tests 112Avg Mileage 43,495Top Failure Suspension — 8.9%

Common MOT Failures

Top failure categories across all test years for 2011 Mercedes Slk 350, with age trends.

Tyres
13.7%
↓ Decreases with age
Brakes
6.4%
↑ Increases with age
Suspension
4.9%
↑ Increases with age
Lamps, Reflectors and Electrical Equipment
4.7%
— Consistent
Noise, emissions and leaks
4.5%
— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

CategoryAt YoungestAt OldestChangeTrend
Tyres17.3% (3 yrs)8.9% (9 yrs)
-8.4%
🟢 ↓
Brakes2.9% (3 yrs)8.0% (9 yrs)
+5.1%
🔴 ↑

Other Manufacture Years

Looking for the best year to buy? See the full comparison on the Mercedes Slk 350 page →

About This Data

This page shows how Mercedes Slk 350 cars manufactured in 2011 perform at MOT as they age. Data spans from 2014 to 2020, covering 1,021 tests. Pass rates naturally decline with age as components wear.

Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.

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