Is the Mercedes Ml reliable?

The Mercedes Ml has an average MOT pass rate of 80% across 18 years, based on 72,675 tests in 2026. That's 2 points below the national average of 82%. The most reliable year is 2015 with a 89% pass rate.

Which year Mercedes Ml is best?

The 2015 Mercedes Ml has the highest MOT pass rate at 89%, while the 1998 model has the lowest at 72%. There's a 17 percentage point spread between the best and worst years.

Mercedes Ml

Reliability, running costs, and MOT data across 18 years from 72,675 real MOT tests.

Avg Pass Rate

80%

Total Tests

72,675

Best Year

2015 (89%)

Years Covered

About the Mercedes Ml

The Mercedes Ml has been tested 72,675 times in 2026 MOT data across 18 model years (1998 to 2015), with an average pass rate of 80%. That's close to the national average of 82%. Available as diesel and petrol.

Best and Worst Years

The 2015 model is the most reliable with a 89% pass rate from 6,912 tests. The 1998 model has the lowest at 72%. With a 17 point spread, choosing the right year makes a big difference to reliability.

Reliability Trend

Newer MERCEDES MLs show better MOT pass rates than older ones, with an average improvement of 9 percentage points.

Mileage Across Years

The oldest model in our data (1998) averages 119,333 miles, while the newest (2015) averages 79,271 miles. Older models have covered serious mileage, so suspension and drivetrain wear are worth checking.

Compared to the Mercedes brand average of 87%, the Ml is 7 points lower, placing it among the less reliable Mercedes models.

Estimated Running Costs

Fuel (Petrol, 3498cc)

£1,592

Road Tax

£760

MOT Test

£55

Predicted Repairs

£350

Total per year£2,757

Per month£230/mo

Based on 7,400 miles/year, current fuel prices, and MOT pass rate data. Insurance not included.

Full 2015 details

How reliable is the Mercedes Ml?

vs national average-2% (82% avg)

vs Mercedes brand average-7% (87% avg)

Best to worst year spread17 percentage points

Reliability trendImproving over years

Mercedes Ml by Year

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

Year	Pass Rate	Tests	Avg Mileage
2015	89%	6,912	79,271 mi
2014	88%	8,494	86,775 mi
2013	88%	9,487	96,900 mi
2012	86%	5,231	100,705 mi
2011	82%	6,382	109,233 mi
2010	82%	6,104	116,332 mi
2009	81%	4,923	121,081 mi
2008	82%	5,355	127,187 mi
2007	81%	5,024	130,037 mi
2006	80%	3,946	131,218 mi
2005	75%	2,047	126,634 mi
2004	73%	2,584	130,231 mi
2003	74%	1,905	129,634 mi
2002	77%	1,756	132,786 mi
2001	77%	1,002	134,405 mi
2000	73%	850	136,667 mi
1999	74%	615	133,164 mi
1998	72%	58	119,333 mi