2008 Mercedes Gl420 Cdi 4-matic A — MOT History by Age
How cars manufactured in 2008 perform at MOT as they age
Data from official DVSA MOT testing records
Compared to Average at Age 8
✅ 16.3% above average (16578 models compared)
How This Car Ages
Pass rate progression for the 2008 Mercedes Gl420 Cdi 4-matic A as it ages.
Bar chart showing pass rate by car age from 3 to 8 years
📊 View as table
| Age | Pass Rate | Tests |
|---|---|---|
| 3 yrs | 90.1% | 71 |
| 4 yrs | 82.3% | 62 |
| 5 yrs | 73.4% | 64 |
| 6 yrs | 75.0% | 60 |
| 7 yrs | 80.7% | 57 |
| 8 yrs | 82.0% | 61 |
Pass Rate Trend
How the 2008 Mercedes Gl420 Cdi 4-matic A pass rate changes as it ages, from first MOT to most recent.
Trend shows improving over 6 years
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| Built | Pass Rate | Tests |
|---|---|---|
| 2016 (8 yrs) | 82% | 61 |
| 2015 (7 yrs) | 80.7% | 57 |
| 2014 (6 yrs) | 75% | 60 |
| 2013 (5 yrs) | 73.4% | 64 |
| 2012 (4 yrs) | 82.3% | 62 |
| 2011 (3 yrs) | 90.1% | 71 |
Year-by-Year MOT Results
Common MOT Failures
Top failure categories across all test years for 2008 Mercedes Gl420 Cdi 4-matic A, 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 |
|---|---|---|---|---|
| Suspension | 2.8% (3 yrs) | 13.1% (8 yrs) | +10.3%
| 🔴 ↑ |
| Tyres | 1.4% (3 yrs) | 9.8% (8 yrs) | +8.4%
| 🔴 ↑ |
| Lamps, Reflectors and Electrical Equipment | 5.6% (3 yrs) | 8.2% (8 yrs) | +2.6%
| 🔴 ↑ |
| Driver's View of the Road | 2.8% (3 yrs) | 4.9% (8 yrs) | +2.1%
| 🔴 ↑ |
Other Manufacture Years
Looking for the best year to buy? See the full comparison on the Mercedes Gl420 Cdi 4-matic A page →
About This Data
This page shows how Mercedes Gl420 Cdi 4-matic A cars manufactured in 2008 perform at MOT as they age. Data spans from 2011 to 2016, covering 375 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.