FORD FIESTA ST-LINE X EDITION TURBO (2021)
Running costs, common problems, and reliability data based on 39 real MOT tests in 2024.
MOT Pass Rate
90%
Total Tests (2024)
39
Avg Mileage
34,152 mi
Est. Annual Cost
£1,400
Is the 2021 FORD FIESTA ST-LINE X EDITION TURBO reliable?
Excellent reliability. Very few MOT failures. That's 8 points above the national average of 82%. It also outperforms the FORD brand average of 85%.
At 3 years old, 90% of FORD FIESTA ST-LINE X EDITION TURBOs from 2021 passed their MOT first time in 2024. That's based on 39 tests across the UK. The average mileage at this age is 34,152 miles.
How does the 2021 FORD FIESTA ST-LINE X EDITION TURBO compare?
Mileage Analysis
The average 2021 FORD FIESTA ST-LINE X EDITION TURBO has 34,152 miles on the clock, which is well above the expected 22,200 miles for a 3-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.
Best year to buy a FORD FIESTA ST-LINE X EDITION TURBO?
The most reliable year is the 2020 model with a 91% MOT pass rate, while the 2019 model has the lowest at 91%. The 2021 sits between the two at 90%.
How much does a 2021 FORD FIESTA ST-LINE X EDITION TURBO 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.
FORD FIESTA ST-LINE X EDITION TURBO by Year
Checking a specific FORD FIESTA ST-LINE X EDITION TURBO?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 FORD FIESTA ST-LINE X EDITION TURBO
The 2021 FORD FIESTA ST-LINE X EDITION TURBO is a city car with a 999cc petrol engine. 39 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. It sits in the bottom 78% of 2021 cars for MOT pass rates.
With an average of 34,152 miles at 3 years old, FORD FIESTA ST-LINE X EDITION TURBO owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.
2021 FORD FIESTA ST-LINE X EDITION TURBO 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 FORD FIESTA ST-LINE X EDITION TURBO?
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 90% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2021 FORD FIESTA ST-LINE X EDITION TURBO
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 91%. Note: with only 39 tests in our data, these figures should be treated as indicative rather than definitive.
Alternatives to the 2021 FORD FIESTA ST-LINE X EDITION TURBO
If reliability is your priority, there are 3 similar cars with a higher MOT pass rate. Here are comparable petrol cars with similar engines:
- FORD FIESTA (2019) 91% pass rate (+1%) from 124,950 tests
- VOLKSWAGEN GOLF (2019) 92% pass rate (+2%) from 89,653 tests
- VAUXHALL CORSA (2019) 88% pass rate (-2%) from 68,639 tests
- MINI COOPER (2019) 92% pass rate (+2%) from 52,140 tests