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FORD FIESTA ST-LINE EDITION T MHEV (2021)

Running costs, common problems, and reliability data based on 8,204 real MOT tests in 2024.

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MOT Pass Rate

94%

Total Tests (2024)

8,204

Avg Mileage

22,765 mi

Est. Annual Cost

£1,400

Is the 2021 FORD FIESTA ST-LINE EDITION T MHEV reliable?

Excellent reliability. Very few MOT failures. That's 12 points above the national average of 82%. It also outperforms the FORD brand average of 85%.

At 3 years old, 94% of FORD FIESTA ST-LINE EDITION T MHEVs from 2021 passed their MOT first time in 2024. That's based on 8,204 tests across the UK. The average mileage at this age is 22,765 miles.

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

Rank among all 2021 cars1072th out of 3,373(top 32%)
Rank among all FORD models205th out of 1,167(top 18%)
vs national average+12% (82% avg)
vs 2021 cars average+2% (92% avg)
vs FORD average+9% (85% avg)

Mileage Analysis

The average 2021 FORD FIESTA ST-LINE EDITION T MHEV has 22,765 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 T MHEV cost to run?

⛽Fuel (Petrol, 999cc)
£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 T MHEV by Year

YearPass RateTestsAvg Mileage
202289%5519,299 mi
202194%8,20422,765 mi
202093%5,96628,238 mi

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About the 2021 FORD FIESTA ST-LINE EDITION T MHEV

The 2021 FORD FIESTA ST-LINE EDITION T MHEV is a city car with a 999cc petrol engine. 8,204 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 22,765 miles at 3 years old, FORD FIESTA ST-LINE EDITION T MHEV owners drive about as much as the UK average.

2021 FORD FIESTA ST-LINE EDITION T MHEV 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 EDITION T MHEV?

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 94% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

FORD FIESTA ST-LINE EDITION T MHEV Reliability Trend

The FORD FIESTA ST-LINE EDITION T MHEV has maintained consistent MOT pass rates across model years, varying by only 2 percentage points.

Buying a Used 2021 FORD FIESTA ST-LINE EDITION T MHEV

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 8,204 MOT tests in our data, there's strong statistical confidence in these figures.

Alternatives to the 2021 FORD FIESTA ST-LINE EDITION T MHEV

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