2009 Mercedes B 170 — MOT History by Age
How cars manufactured in 2009 perform at MOT as they age
Data from official DVSA MOT testing records
Compared to Average at Age 11
✅ 9.0% above average (14777 models compared)
How This Car Ages
Pass rate progression for the 2009 Mercedes B 170 as it ages.
Bar chart showing pass rate by car age from 3 to 11 years
📊 View as table
| Age | Pass Rate | Tests |
|---|---|---|
| 3 yrs | 86.3% | 292 |
| 4 yrs | 84.2% | 284 |
| 5 yrs | 82.6% | 282 |
| 6 yrs | 78.0% | 291 |
| 7 yrs | 75.7% | 284 |
| 8 yrs | 74.2% | 128 |
| 9 yrs | 70.5% | 95 |
| 10 yrs | 74.0% | 96 |
| 11 yrs | 65.2% | 89 |
Pass Rate Trend
How the 2009 Mercedes B 170 pass rate changes as it ages, from first MOT to most recent.
Trend shows declining over 9 years
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| Built | Pass Rate | Tests |
|---|---|---|
| 2020 (11 yrs) | 65.2% | 89 |
| 2019 (10 yrs) | 74% | 96 |
| 2018 (9 yrs) | 70.5% | 95 |
| 2017 (8 yrs) | 74.2% | 128 |
| 2016 (7 yrs) | 75.7% | 284 |
| 2015 (6 yrs) | 78% | 291 |
| 2014 (5 yrs) | 82.6% | 282 |
| 2013 (4 yrs) | 84.2% | 284 |
| 2012 (3 yrs) | 86.3% | 292 |
Year-by-Year MOT Results
Common MOT Failures
Top failure categories across all test years for 2009 Mercedes B 170, with age trends.
How Failures Change With Age
Comparing failure rates between the youngest and oldest test years.
| Category | At Youngest | At Oldest | Change | Trend |
|---|---|---|---|---|
| Brakes | 4.5% (3 yrs) | 40.4% (11 yrs) | +35.9%
| 🔴 ↑ |
| Tyres | 5.5% (3 yrs) | 23.6% (11 yrs) | +18.1%
| 🔴 ↑ |
Other Manufacture Years
Looking for the best year to buy? See the full comparison on the Mercedes B 170 page →
About This Data
This page shows how Mercedes B 170 cars manufactured in 2009 perform at MOT as they age. Data spans from 2012 to 2020, covering 1,841 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.