FORD MUSTANG MACH 1 AUTO (2021)
Running costs, reliability data, and common problems from 126 real MOT tests.
Annual Cost
£2,042
£170/month
MOT Pass Rate
98%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 35-50
5038cc Petrol
Great Choice
98% pass rate, £2042/year to run. 16 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 16 points above the national average of 82%. It also outperforms the FORD brand average of 85%.
At 5 years old, 98% of FORD MUSTANG MACH 1 AUTOs from 2021 passed their MOT first time in 2026. That's based on 126 tests across the UK. The average mileage at this age is 15,296 miles.
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Mileage Analysis
15,296
Average miles
37,000
Expected for age
The average 2021 FORD MUSTANG MACH 1 AUTO has 15,296 miles on the clock, which is significantly below the expected 37,000 miles for a 5-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.
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About the 2021 FORD MUSTANG MACH 1 AUTO
The 2021 FORD MUSTANG MACH 1 AUTO is a performance with a 5038cc petrol engine. 126 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It ranks in the top 6% of all 2021 cars for reliability.
With an average of 15,296 miles at 5 years old, FORD MUSTANG MACH 1 AUTO owners tend to use this car less than the typical driver. Very low mileage could mean the car has been garaged or used only for short trips, which can cause its own issues like battery drain and moisture buildup.
2021 FORD MUSTANG MACH 1 AUTO Fuel Costs
The 5038cc petrol engine is on the larger side, so fuel won't be this car's strong point. 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 MUSTANG MACH 1 AUTO?
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 98% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2021 FORD MUSTANG MACH 1 AUTO
At 5 years old, the FORD MUSTANG MACH 1 AUTO 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 MUSTANG MACH 1 AUTO'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 MUSTANG MACH 1 AUTO stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| FORD MUSTANG MACH 1 AUTO(2021) | 98% | £1592 | £195 | Grp 35-50 | £2042 |
| JAGUAR F-TYPE(2019) | 95% | £1592 | £190 | Grp 35-50 | £2037-£5 |
| LAND ROVER RANGE ROVER SPRT SVR CRBN ED A(2021) | 96% | £1592 | £190 | Grp 35-50 | £2037-£5 |
| ASTON MARTIN DBS(2019) | 97% | £1592 | £190 | Grp 35-50 | £2037-£5 |
| TOYOTA LAND CRUISER(2019) | 93% | £1592 | £190 | Grp 35-50 | £2037-£5 |
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.
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