Mercedes G-Class

Reliability, estimated running costs, and MOT data across 15 model years from 4,421 MOT tests in 2024.

Avg Pass Rate

88%

Total Tests

4,421

Highest Pass Rate

2019 (96%)

Years Covered

About the Mercedes G-Class

The Mercedes G-Class was MOT tested 4,421 times in 2024 (DVSA data, retests included) across 15 model years (1999 to 2021), with an average pass rate of 88%. That's comfortably above the average of 82% across all models in our data. Our records list diesel and petrol versions.

Best and Worst Years

Of the years with at least 100 tests, the 2019 model has the highest pass rate at 96% from 319 tests. The 2017 model has the lowest at 86%. The 10 point gap means pass rates vary somewhat between years, but no year is dramatically different. Newer cars usually pass more often simply because they are younger.

Reliability Trend

The Mercedes G-Class has maintained consistent MOT pass rates across model years, varying by only 2 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.

Estimated Running Costs

Fuel (Diesel, 1950cc)

£1,397

Road Tax

£200

MOT Test

£55

Predicted Repairs

£500

Total per year£2,152

Per month£179/mo

Based on 7,400 miles/year, average pump prices of 174.57p petrol and 199.33p diesel (GOV.UK weekly road fuel prices, week of 19 October 2026), and MOT pass rate data. Insurance not included.

Full 2021 details

How reliable is the Mercedes G-Class?

vs average of all models+6% (82% avg)

vs Mercedes brand average+1% (87% avg)

Best to worst year spread10 percentage points

Reliability trendStable over years

Mercedes G-Class by Year

Click any year to see detailed running costs, reliability data, and comparisons with similar cars.

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

Questions about the Mercedes G-Class

Is the Mercedes G-Class reliable?

Across its 15 model years in our data (1999 to 2021), the Mercedes G-Class averages an 88% MOT pass rate, from 4,421 tests (DVSA MOT data for tests in 2024, retests included). That's 6 points above the average of 82% across all models in the same data. The 2019 model has the highest pass rate of the years with at least 100 tests, at 96%.

Which year Mercedes G-Class has the best MOT pass rate?

Of the years with at least 100 tests, the 2019 Mercedes G-Class has the highest MOT pass rate at 96%, while the 2017 model has the lowest at 86%, a 10 point gap. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.