1999 Mercedes Slk — MOT History by Age
How cars manufactured in 1999 perform at MOT as they age
Data from official DVSA MOT testing records
Compared to Average at Age 13
✅ 23.4% above average (13033 models compared)
How This Car Ages
Pass rate progression for the 1999 Mercedes Slk as it ages.
At 12 years: 63.6% pass rate · At 13 years: 76.5% pass rate
Bar chart showing pass rate by car age from 12 to 13 years
📊 View as table
| Age | Pass Rate | Tests |
|---|---|---|
| 12 yrs | 63.6% | 33 |
| 13 yrs | 76.5% | 34 |
Pass Rate Trend
How the 1999 Mercedes Slk pass rate changes as it ages, from first MOT to most recent.
Trend shows stable over 2 years
📊 View as table
| Built | Pass Rate | Tests |
|---|---|---|
| 2012 (13 yrs) | 76.5% | 34 |
| 2011 (12 yrs) | 63.6% | 33 |
Year-by-Year MOT Results
Common MOT Failures
Top failure categories across all test years for 1999 Mercedes Slk, 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 |
|---|---|---|---|---|
| Lamps, Reflectors and Electrical Equipment | 27.3% (12 yrs) | 5.9% (13 yrs) | -21.4%
| 🟢 ↓ |
| Tyres | 12.1% (12 yrs) | 8.8% (13 yrs) | -3.3%
| 🟢 ↓ |
| Suspension | 9.1% (12 yrs) | 11.8% (13 yrs) | +2.7%
| 🔴 ↑ |
| Brakes | 9.1% (12 yrs) | 8.8% (13 yrs) | -0.3%
| ⚪ — |
Other Manufacture Years
Looking for the best year to buy? See the full comparison on the Mercedes Slk page →
About This Data
This page shows how Mercedes Slk cars manufactured in 1999 perform at MOT as they age. Data spans from 2011 to 2012, covering 67 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.