FIAT 500X (2021)
Running costs, common problems, and reliability data based on 1,392 real MOT tests in 2024.
MOT Pass Rate
91%
Total Tests (2024)
1,392
Avg Mileage
29,656 mi
Est. Annual Cost
£1,400
Is the 2021 FIAT 500X reliable?
Excellent reliability. Very few MOT failures. That's 9 points above the national average of 82%. It also outperforms the FIAT brand average of 83%.
At 3 years old, 91% of FIAT 500Xs from 2021 passed their MOT first time in 2024. That's based on 1,392 tests across the UK. The average mileage at this age is 29,656 miles.
How does the 2021 FIAT 500X compare?
Mileage Analysis
The average 2021 FIAT 500X has 29,656 miles on the clock, which is above the expected 22,200 miles for a 3-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 FIAT 500X?
The most reliable year is the 2020 model with a 92% MOT pass rate, while the 2015 model has the lowest at 80%. The 2021 sits between the two at 91%.
How much does a 2021 FIAT 500X 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.
FIAT 500X by Year
Checking a specific FIAT 500X?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 FIAT 500X
The 2021 FIAT 500X is a city car with a 999cc petrol engine. 1,392 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. Among all cars from 2021, the average MOT pass rate is 92%, and this model falls short of that benchmark.
With an average of 29,656 miles at 3 years old, FIAT 500X owners cover more miles than the average driver.
2021 FIAT 500X Fuel Costs
The modest 999cc petrol engine keeps fuel costs low, which is a real advantage for a city car. Expect around 50 mpg in mixed driving, which works out to roughly £955 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2021 FIAT 500X?
Total estimated annual running cost is £1,400 (£117/month), broken down as £955 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.
FIAT 500X Reliability Trend
Newer FIAT 500Xs show better MOT pass rates than older ones, with an average improvement of 8 percentage points.
Buying a Used 2021 FIAT 500X
At 3 years old, this is still relatively fresh. You may find examples with remaining manufacturer warranty. Depreciation is slowing but hasn't bottomed out yet. If you're flexible on year, the 2020 model has the highest pass rate at 92%.
Alternatives to the 2021 FIAT 500X
If reliability is your priority, there are 2 similar cars with a higher MOT pass rate. Here are comparable petrol cars with similar engines:
- FORD FIESTA (2019) 91% pass rate (same) from 124,950 tests
- VOLKSWAGEN GOLF (2019) 92% pass rate (+1%) from 89,653 tests
- VAUXHALL CORSA (2019) 88% pass rate (-3%) from 68,639 tests
- MINI COOPER (2019) 92% pass rate (+1%) from 52,140 tests