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2009 Mercedes-Benz B-Class — MOT History by Age

How cars manufactured in 2009 perform at MOT as they age

17 years
Current Age
57.8%
Latest Pass Rate
18,849
Total Tests (All Years)
94,218 mi
Avg Mileage (Latest)

Data from official DVSA MOT testing records

Compared to Average at Age 15

This car: 57.8%
Average: 52.4%

✅ 5.4% above average (11197 models compared)

How This Car Ages

Pass rate progression for the 2009 Mercedes-Benz B-Class as it ages.

3 yrs88.6%
4 yrs73.8%
5 yrs78.4%
6 yrs83.8%
7 yrs73.0%
12 yrs61.9%
13 yrs62.0%
14 yrs58.7%
15 yrs57.8%

Bar chart showing pass rate by car age from 3 to 15 years

Fail Rate %
📊 View as table
AgePass RateTests
3 yrs88.6%44
4 yrs73.8%42
5 yrs78.4%37
6 yrs83.8%37
7 yrs73.0%37
12 yrs61.9%5,070
13 yrs62.0%3,940
14 yrs58.7%4,735
15 yrs57.8%4,907

Pass Rate Trend

How the 2009 Mercedes-Benz B-Class pass rate changes as it ages, from first MOT to most recent.

Trend shows declining over 9 years

Pass Rate %
📊 View as table
BuiltPass RateTests
2024 (15 yrs)57.8%4,907
2023 (14 yrs)58.7%4,735
2022 (13 yrs)62%3,940
2021 (12 yrs)61.9%5,070
2016 (7 yrs)73%37
2015 (6 yrs)83.8%37
2014 (5 yrs)78.4%37
2013 (4 yrs)73.8%42
2012 (3 yrs)88.6%44

Year-by-Year MOT Results

2012
88.6%
Age (yrs) 3Tests 44Avg Mileage 23,794Top Failure Tyres — 6.8%
2013
73.8%
Age (yrs) 4Tests 42Avg Mileage 30,621Top Failure Lamps, Reflectors and Electrical Equipment — 26.2%
2014
78.4%
Age (yrs) 5Tests 37Avg Mileage 38,085Top Failure Brakes — 24.3%
2015
83.8%
Age (yrs) 6Tests 37Avg Mileage 45,074Top Failure Brakes — 29.7%
2016
73.0%
Age (yrs) 7Tests 37Avg Mileage 53,089Top Failure Tyres — 18.9%
2021High Fail Rate
61.9%
Age (yrs) 12Tests 5,070Avg Mileage 83,475Top Failure Brakes — 52.4%
2022High Fail Rate
62.0%
Age (yrs) 13Tests 3,940Avg Mileage 87,711Top Failure Brakes — 55.1%
2023High Fail Rate
58.7%
Age (yrs) 14Tests 4,735Avg Mileage 91,659Top Failure Brakes — 63.2%
2024High Fail Rate
57.8%
Age (yrs) 15Tests 4,907Avg Mileage 94,218Top Failure Brakes — 54.9%

Common MOT Failures

Top failure categories across all test years for 2009 Mercedes-Benz B-Class, with age trends.

Brakes
39.3%
↑ Increases with age
Lamps, reflectors and electrical equipment
27.3%
↓ Decreases with age
Suspension
22.3%
↑ Increases with age
Lamps, Reflectors and Electrical Equipment
19.4%
↓ Decreases with age
Tyres
18.9%
↑ Increases with age

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

CategoryAt YoungestAt OldestChangeTrend
Tyres6.8% (3 yrs)23.9% (15 yrs)
+17.1%
🔴 ↑

Other Manufacture Years

Looking for the best year to buy? See the full comparison on the Mercedes-Benz B-Class page →

About This Data

This page shows how Mercedes-Benz B-Class cars manufactured in 2009 perform at MOT as they age. Data spans from 2012 to 2024, covering 18,849 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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