MITSUBISHI ASX (2018)
Running costs, common problems, and reliability data based on 3,708 real MOT tests in 2024.
MOT Pass Rate
91%
Total Tests (2024)
3,708
Avg Mileage
45,741 mi
Est. Annual Cost
£1,350
Is the 2018 MITSUBISHI ASX reliable?
Excellent reliability. Very few MOT failures. That's 9 points above the national average of 82%. It also outperforms the MITSUBISHI brand average of 80%.
At 6 years old, 91% of MITSUBISHI ASXs from 2018 passed their MOT first time in 2024. That's based on 3,708 tests across the UK. The average mileage at this age is 45,741 miles.
How does the 2018 MITSUBISHI ASX compare?
Mileage Analysis
The average 2018 MITSUBISHI ASX has 45,741 miles on the clock, which is in line with the expected 44,400 miles for a 6-year-old car, suggesting normal everyday use.
Best year to buy a MITSUBISHI ASX?
The most reliable year is the 2020 model with a 94% MOT pass rate, while the 2010 model has the lowest at 74%. The 2018 sits between the two at 91%.
How much does a 2018 MITSUBISHI ASX 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.
MITSUBISHI ASX by Year
Checking a specific MITSUBISHI ASX?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2018 MITSUBISHI ASX
The 2018 MITSUBISHI ASX is a small family car with a 1560cc diesel engine. 3,708 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 beats that benchmark.
With an average of 45,741 miles at 6 years old, MITSUBISHI ASX owners drive about as much as the UK average.
2018 MITSUBISHI ASX Fuel Costs
The 1560cc diesel engine offers a reasonable balance between performance and economy. Expect around 55 mpg in mixed driving, which works out to roughly £905 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 MITSUBISHI ASX?
Total estimated annual running cost is £1,350 (£113/month), broken down as £905 fuel, £190 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 91% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
MITSUBISHI ASX Reliability Trend
Newer MITSUBISHI ASXs show better MOT pass rates than older ones, with an average improvement of 11 percentage points.
Buying a Used 2018 MITSUBISHI ASX
At 6 years old, the MITSUBISHI ASX offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. If you're flexible on year, the 2020 model has the highest pass rate at 94%.
Alternatives to the 2018 MITSUBISHI ASX
The MITSUBISHI ASX is actually the most reliable option among similar diesel small family cars from this era. Here are comparable diesel cars with similar engines:
- VOLKSWAGEN GOLF (2017) 91% pass rate (same) from 127,682 tests
- FORD FOCUS (2019) 89% pass rate (-2%) from 93,803 tests
- MERCEDES A (2019) 91% pass rate (same) from 89,588 tests
- MERCEDES A-CLASS (2017) 88% pass rate (-3%) from 82,055 tests