FORD FOCUS ST (2021)
Running costs, reliability data, and common problems from 964 real MOT tests.
Annual Cost
£2,042
£170/month
MOT Pass Rate
93%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 25-38
2261cc Petrol
Great Choice
93% pass rate, £2042/year to run. 11 points above average.
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Annual Running Costs
~30 mpg
Flat rate (post-2017)
Low estimate due to excellent reliability
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
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Reliability Verdict
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 5 years old, 93% of FORD FOCUS STs from 2021 passed their MOT first time in 2026. That's based on 964 tests across the UK. The average mileage at this age is 21,351 miles.
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How Does It Compare?
Mileage Analysis
21,351
Average miles
37,000
Expected for age
The average 2021 FORD FOCUS ST has 21,351 miles on the clock, which is below the expected 37,000 miles for a 5-year-old car. This suggests lighter use than average, which generally means less wear on major components.
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FORD FOCUS ST by Year
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About the 2021 FORD FOCUS ST
The 2021 FORD FOCUS ST is a large car with a 2261cc petrol engine. 964 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. Among all cars from 2021, the average MOT pass rate is 92%, and this model beats that benchmark.
With an average of 21,351 miles at 5 years old, FORD FOCUS ST owners tend to use this car less than the typical driver.
2021 FORD FOCUS ST Fuel Costs
The 2261cc petrol engine offers a reasonable balance between performance and economy. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 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 FOCUS ST?
Total estimated annual running cost is £2,042 (£170/month), broken down as £1592 fuel, £195 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 FOCUS ST Reliability Trend
The FORD FOCUS ST has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.
Buying a Used 2021 FORD FOCUS ST
At 5 years old, the FORD FOCUS ST offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost.
Common Issues to Watch For
Based on the 2021 FORD FOCUS ST's fuel type, age, and engine size, these are the most likely problem areas to check.
Oil Consumption
Low riskLarger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.
Service History
Low riskAlways request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.
Running Costs Compared
How the 2021 FORD FOCUS ST stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| FORD FOCUS ST(2021) | 93% | £1592 | £195 | Grp 25-38 | £2042 |
| MERCEDES A(2021) | 94% | £1327 | £190 | Grp 18-32 | £1772-£270 |
| VOLVO XC40(2020) | 93% | £1327 | £190 | Grp 18-32 | £1772-£270 |
| FORD RANGER(2021) | 90% | £1592 | £190 | Grp 25-38 | £2037-£5 |
| JAGUAR F-PACE(2019) | 91% | £1327 | £190 | Grp 18-32 | £1772-£270 |
Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.
Related Ford Models
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