Is the 2021 FORD MUSTANG reliable?

Excellent reliability. Very few MOT failures. 91% of FORD MUSTANGs from 2021 passed their MOT first time in 2026, based on 923 tests. That's 9 points above the national average of 82%.

How much does a 2021 FORD MUSTANG cost to run?

Estimated annual running cost is £2,042 (£170/month), including £1592 fuel, £195 road tax, £55 MOT, and £200 predicted repairs.

What is the MOT pass rate for a 2021 FORD MUSTANG?

The 2021 FORD MUSTANG has a 91% MOT pass rate based on 923 tests in 2026. This ranks 2214 out of 3373 cars from 2021.

Which year FORD MUSTANG is most reliable?

The 2022 FORD MUSTANG has the highest MOT pass rate at 96%. The least reliable year is 2000 at 76%.

FORD MUSTANG (2021)

Q: What is the average mileage for a 2021 FORD MUSTANG?

The average mileage for a 2021 FORD MUSTANG is 15,949 miles, 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.

Running costs, reliability data, and common problems from 923 real MOT tests.

Annual Cost

£2,042

£170/month

MOT Pass Rate

91%

Excellent

Road Tax

£195

Flat rate/year

Insurance

Grp 25-38

2261cc Petrol

Great Choice

91% pass rate, £2042/year to run. 9 points above average.

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Petrol2261cc5 years old923 tests16k miles avg

Annual Running Costs

Fuel (Petrol, 2261cc)

~30 mpg

£1,592

Road Tax

Flat rate (post-2017)

£195

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£2,042

Per month£170/mo

Per week£39/wk

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

91% MOT pass rate(Excellent)

0%National avg: 82%100%

Excellent reliability. Very few MOT failures. That's 9 points above the national average of 82%. It also outperforms the FORD brand average of 85%.

At 5 years old, 91% of FORD MUSTANGs from 2021 passed their MOT first time in 2026. That's based on 923 tests across the UK. The average mileage at this age is 15,949 miles.

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How Does It Compare?

Rank among 2021 cars2214th of 3,373(top 66%)

Rank among FORD models396th of 1,167(top 34%)

vs national average+9%(82% avg)

vs 2021 cars average-1%(92% avg)

vs FORD average+6%(85% avg)

Mileage Analysis

15,949

Average miles

37,000

Expected for age

The average 2021 FORD MUSTANG has 15,949 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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Best Year to Buy?

The most reliable year is the 2022 model with a 96% MOT pass rate, while the 2000 model has the lowest at 76%. The 2021 sits between the two at 91%.

FORD MUSTANG by Year

Year	Pass Rate	Tests	Avg Mileage
2022	96%	54	13,235 mi
2021	91%	923	15,949 mi
2020	92%	2,330	18,792 mi
2019	89%	3,200	23,848 mi
2018	90%	5,727	30,511 mi
2017	90%	5,161	33,418 mi
2016	88%	6,644	36,878 mi
2015	88%	797	42,568 mi
2014	90%	193	54,631 mi
2013	90%	223	53,084 mi
2012	88%	250	63,500 mi
2011	82%	199	70,044 mi
2010	86%	242	71,217 mi
2009	88%	260	65,602 mi
2008	88%	463	57,208 mi
2007	87%	628	66,137 mi
2006	86%	651	73,935 mi
2005	88%	677	72,553 mi
2004	82%	147	59,270 mi
2003	85%	95	81,097 mi
2002	92%	75	77,428 mi
2001	85%	88	67,827 mi
2000	76%	128	75,538 mi
1999	88%	101	85,621 mi
1998	90%	70	115,083 mi
1997	84%	125	77,032 mi
1996	84%	170	96,301 mi
1995	84%	137	92,168 mi
1994	84%	124	84,772 mi
1991	98%	48	73,234 mi

Similar Cars to Consider

MERCEDES A

2021 · 1991cc Petrol

£1,772/year

94%

+3%

VOLVO XC40

2020 · 2000cc Petrol

£1,772/year

93%

+2%

FORD RANGER

2021 · 2400cc Petrol

£2,037/year

90%

-1%

JAGUAR F-PACE

2019 · 1997cc Petrol

£1,772/year

91%

same

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About the 2021 FORD MUSTANG

The 2021 FORD MUSTANG is a large car with a 2261cc petrol engine. 923 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 falls short of that benchmark.

With an average of 15,949 miles at 5 years old, FORD MUSTANG 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 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 MUSTANG?

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 91% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

FORD MUSTANG Reliability Trend

Newer FORD MUSTANGs show better MOT pass rates than older ones, with an average improvement of 4 percentage points.

Buying a Used 2021 FORD MUSTANG

At 5 years old, the FORD MUSTANG offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. If you're flexible on year, the 2022 model has the highest pass rate at 96%.

Common Issues to Watch For

Based on the 2021 FORD MUSTANG's fuel type, age, and engine size, these are the most likely problem areas to check.

Oil Consumption

Low risk

Larger 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 risk

Always 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 stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
FORD MUSTANG(2021)	91%	£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.