BMW X4 (2018)
Running costs, common problems, and reliability data based on 4,985 real MOT tests in 2024.
MOT Pass Rate
93%
Total Tests (2024)
4,985
Avg Mileage
55,401 mi
Est. Annual Cost
£1,482
Is the 2018 BMW X4 reliable?
Excellent reliability. Very few MOT failures. That's 11 points above the national average of 82%. It also outperforms the BMW brand average of 88%.
At 6 years old, 93% of BMW X4s from 2018 passed their MOT first time in 2024. That's based on 4,985 tests across the UK. The average mileage at this age is 55,401 miles.
How does the 2018 BMW X4 compare?
Mileage Analysis
The average 2018 BMW X4 has 55,401 miles on the clock, which is above the expected 44,400 miles for a 6-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.
Best year to buy a BMW X4?
The most reliable year is the 2020 model with a 94% MOT pass rate, while the 2015 model has the lowest at 88%. The 2018 sits between the two at 93%.
How much does a 2018 BMW X4 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.
BMW X4 by Year
Checking a specific BMW X4?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2018 BMW X4
The 2018 BMW X4 is a premium with a 1995cc diesel engine. 4,985 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 55,401 miles at 6 years old, BMW X4 owners cover more miles than the average driver.
2018 BMW X4 Fuel Costs
The 1995cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,037 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 BMW X4?
Total estimated annual running cost is £1,482 (£124/month), broken down as £1037 fuel, £190 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 93% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
BMW X4 Reliability Trend
Newer BMW X4s show better MOT pass rates than older ones, with an average improvement of 5 percentage points.
Buying a Used 2018 BMW X4
At 6 years old, the BMW X4 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 BMW X4
The BMW X4 is actually the most reliable option among similar diesel premiums from this era. Here are comparable diesel cars with similar engines:
- VOLKSWAGEN GOLF (2017) 91% pass rate (-2%) from 127,682 tests
- FORD FOCUS (2019) 89% pass rate (-4%) from 93,803 tests
- FORD TRANSIT (2017) 81% pass rate (-12%) from 80,031 tests
- VOLKSWAGEN POLO (2018) 84% pass rate (-9%) from 79,867 tests