Mercedes G-class
Reliability, running costs, and MOT data across 15 years from 4,421 real MOT tests.
Avg Pass Rate
88%
Total Tests
4,421
Best Year
2007 (100%)
Years Covered
15
How reliable is the Mercedes G-class?
Mercedes G-class by Year
| Year | Pass Rate | Tests | Avg Mileage |
|---|---|---|---|
| 2021 | 78% | 65 | 30,190 mi |
| 2020 | 98% | 66 | 32,570 mi |
| 2019 | 96% | 319 | 41,698 mi |
| 2018 | 94% | 807 | 39,199 mi |
| 2017 | 86% | 691 | 43,730 mi |
| 2016 | 94% | 604 | 58,012 mi |
| 2015 | 88% | 591 | 48,991 mi |
| 2014 | 92% | 362 | 54,969 mi |
| 2013 | 94% | 449 | 69,675 mi |
| 2012 | 90% | 221 | 76,209 mi |
| 2011 | 96% | 92 | 70,666 mi |
| 2010 | 73% | 33 | 78,145 mi |
| 2007 | 100% | 35 | 103,461 mi |
| 2001 | 60% | 42 | 93,234 mi |
| 1999 | 82% | 44 | 113,541 mi |
Checking a specific Mercedes G-class?
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About the Mercedes G-class
The Mercedes G-class has been tested 4,421 times in 2024 MOT data across 15 model years (1999 to 2021), with an average pass rate of 88%. That's comfortably above the national average of 82%, making it a reliable choice. Available as diesel and petrol.
Best and Worst Years
The 2007 model is the most reliable with a 100% pass rate from 35 tests. The 2001 model has the lowest at 60%. With a 40 point spread, choosing the right year makes a big difference to reliability.
Reliability Trend
The MERCEDES G-CLASS has maintained consistent MOT pass rates across model years, varying by only 1 percentage points.
Mileage Across Years
The oldest model in our data (1999) averages 113,541 miles, while the newest (2021) averages 30,190 miles. Older models have covered serious mileage, so suspension and drivetrain wear are worth checking.
Click any year in the table above to see detailed running costs, individual reliability data, and comparisons with similar cars.