CarCostCheck

Mercedes X

Reliability, running costs, and MOT data across 4 years from 10,504 real MOT tests.

Avg Pass Rate

89%

Total Tests

10,504

Best Year

2020 (90%)

Years Covered

4

About the Mercedes X

The Mercedes X has been tested 10,504 times in 2026 MOT data across 4 model years (2017 to 2020), with an average pass rate of 89%. That's comfortably above the national average of 82%, making it a reliable choice. Available as diesel.

Best and Worst Years

The 2020 model is the most reliable with a 90% pass rate from 1,679 tests. The 2018 model has the lowest at 88%. With just a 2 point spread, the X is consistently reliable regardless of year.

Reliability Trend

The MERCEDES X has maintained consistent MOT pass rates across model years, varying by only 1 percentage points.

Mileage Across Years

The oldest model in our data (2017) averages 73,721 miles, while the newest (2020) averages 46,188 miles.

Estimated Running Costs

Fuel (Diesel, 2298cc)
£1,245
Road Tax
£195
MOT Test
£55
Predicted Repairs
£200
Total per year£1,695
Per month£141/mo

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

Full 2020 details

How reliable is the Mercedes X?

vs national average+7% (82% avg)
vs Mercedes brand average+2% (87% avg)
Best to worst year spread2 percentage points
Reliability trendStable over years

Mercedes X by Year

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

YearPass RateTestsAvg Mileage
202090%1,67946,188 mi
201989%4,66758,389 mi
201888%3,70369,309 mi
201790%45573,721 mi

Mercedes X Guides & Articles

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