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FORD FIESTA ST-LINE EDITION TURBO (2021)

Running costs, common problems, and reliability data based on 7,427 real MOT tests in 2024.

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MOT Pass Rate

93%

Total Tests (2024)

7,427

Avg Mileage

23,328 mi

Est. Annual Cost

£1,400

Is the 2021 FORD FIESTA ST-LINE EDITION TURBO reliable?

Excellent reliability. Very few MOT failures. That's 11 points above the national average of 82%. It also outperforms the FORD brand average of 85%.

At 3 years old, 93% of FORD FIESTA ST-LINE EDITION TURBOs from 2021 passed their MOT first time in 2024. That's based on 7,427 tests across the UK. The average mileage at this age is 23,328 miles.

How does the 2021 FORD FIESTA ST-LINE EDITION TURBO compare?

Rank among all 2021 cars1435th out of 3,373(top 43%)
Rank among all FORD models272th out of 1,167(top 23%)
vs national average+11% (82% avg)
vs 2021 cars average+1% (92% avg)
vs FORD average+8% (85% avg)

Mileage Analysis

The average 2021 FORD FIESTA ST-LINE EDITION TURBO has 23,328 miles on the clock, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.

How much does a 2021 FORD FIESTA ST-LINE EDITION TURBO cost to run?

⛽Fuel (Petrol, 998cc)
£955
🏛️Road Tax
£190
🔧MOT Test
£55
🛠️Predicted Repairs
£200
Total per year£1,400
Per month£117/mo

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 EDITION TURBO by Year

YearPass RateTestsAvg Mileage
202193%7,42723,328 mi
202092%12,19029,967 mi
201985%17835,700 mi

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About the 2021 FORD FIESTA ST-LINE EDITION TURBO

The 2021 FORD FIESTA ST-LINE EDITION TURBO is a city car with a 998cc petrol engine. 7,427 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 beats that benchmark.

With an average of 23,328 miles at 3 years old, FORD FIESTA ST-LINE EDITION TURBO owners drive about as much as the UK average.

2021 FORD FIESTA ST-LINE EDITION TURBO Fuel Costs

The modest 998cc 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 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 93% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

FORD FIESTA ST-LINE EDITION TURBO 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.

Buying a Used 2021 FORD FIESTA ST-LINE 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. With 7,427 MOT tests in our data, there's strong statistical confidence in these figures.

Alternatives to the 2021 FORD FIESTA ST-LINE EDITION TURBO

The FORD FIESTA ST-LINE EDITION TURBO is actually the most reliable option among similar petrol city cars from this era. Here are comparable petrol cars with similar engines: