Is the Ford Fiesta st-line edition turbo reliable?

The Ford Fiesta st-line edition turbo has an average MOT pass rate of 90% across 3 years, based on 19,795 tests in 2026. That's 8 points above the national average of 82%. The most reliable year is 2021 with a 93% pass rate.

Which year Ford Fiesta st-line edition turbo is best?

The 2021 Ford Fiesta st-line edition turbo has the highest MOT pass rate at 93%, while the 2019 model has the lowest at 85%. There's a 8 percentage point spread between the best and worst years.

Ford Fiesta st-line edition turbo

Reliability, running costs, and MOT data across 3 years from 19,795 real MOT tests.

Avg Pass Rate

90%

Total Tests

19,795

Best Year

2021 (93%)

Years Covered

About the Ford Fiesta st-line edition turbo

The Ford Fiesta st-line edition turbo has been tested 19,795 times in 2026 MOT data across 3 model years (2019 to 2021), with an average pass rate of 90%. That's comfortably above the national average of 82%, making it a reliable choice. Available as petrol.

Best and Worst Years

The 2021 model is the most reliable with a 93% pass rate from 7,427 tests. The 2019 model has the lowest at 85%. The 8 point spread between years means reliability varies somewhat, but no year is dramatically different.

Reliability Trend

Newer FORD FIESTA ST-LINE EDITION TURBOs show better MOT pass rates than older ones, with an average improvement of 8 percentage points.

Mileage Across Years

The oldest model in our data (2019) averages 35,700 miles, while the newest (2021) averages 23,328 miles.

Compared to the Ford brand average of 85%, the Fiesta st-line edition turbo performs 5 points better, making it one of the more reliable options in the Ford range.