MERCEDES X (2018)
Running costs, common problems, and reliability data based on 3,703 real MOT tests in 2024.
MOT Pass Rate
88%
Total Tests (2024)
3,703
Avg Mileage
69,309 mi
Est. Annual Cost
£1,840
Is the 2018 MERCEDES X reliable?
Good reliability. Occasional issues but generally solid. That's 6 points above the national average of 82%.
At 6 years old, 88% of MERCEDES Xs from 2018 passed their MOT first time in 2024. That's based on 3,703 tests across the UK. The average mileage at this age is 69,309 miles.
How does the 2018 MERCEDES X compare?
Mileage Analysis
The average 2018 MERCEDES X has 69,309 miles on the clock, which is well above the expected 44,400 miles for a 6-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.
Best year to buy a MERCEDES X?
The most reliable year is the 2020 model with a 90% MOT pass rate, while the 2018 model has the lowest at 88%. Consider a different year if reliability is a priority.
How much does a 2018 MERCEDES X cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
MERCEDES X by Year
Checking a specific MERCEDES X?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2018 MERCEDES X
The 2018 MERCEDES X is a large car with a 2987cc diesel engine. 3,703 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. Among all cars from 2018, the average MOT pass rate is 89%, and this model falls short of that benchmark.
With an average of 69,309 miles at 6 years old, MERCEDES X owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.
2018 MERCEDES X Fuel Costs
The 2987cc diesel engine is on the larger side, so fuel won't be this car's strong point. Expect around 40 mpg in mixed driving, which works out to roughly £1,245 per year at current diesel prices of 148p per litre (based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.
What does it cost to own a 2018 MERCEDES X?
Total estimated annual running cost is £1,840 (£153/month), broken down as £1245 fuel, £190 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 88% pass rate. Keeping on top of servicing will help avoid surprises.
MERCEDES X Reliability Trend
The MERCEDES X has maintained consistent MOT pass rates across model years, varying by only 1 percentage points.
Buying a Used 2018 MERCEDES X
At 6 years old, the MERCEDES X offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost.
Alternatives to the 2018 MERCEDES X
If reliability is your priority, there are 3 similar cars with a higher MOT pass rate. Here are comparable diesel cars with similar engines:
- MERCEDES E (2019) 90% pass rate (+2%) from 41,000 tests
- MERCEDES GLC (2018) 91% pass rate (+3%) from 40,494 tests
- AUDI A5 (2017) 89% pass rate (+1%) from 33,531 tests
- FORD RANGER (2019) 87% pass rate (-1%) from 32,194 tests