AUDI A3 SPORT 40 TFSI E S-A (2021)
Running costs, reliability data, and common problems from 3,688 real MOT tests.
Annual Cost
£1,587
£132/month
MOT Pass Rate
90%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 8-20
1395cc Hybrid
Great Choice
90% pass rate, £1587/year to run. 8 points above average.
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Annual Running Costs
~42 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 8 points above the national average of 82%.
At 5 years old, 90% of AUDI A3 SPORT 40 TFSI E S-As from 2021 passed their MOT first time in 2026. That's based on 3,688 tests across the UK. The average mileage at this age is 33,035 miles.
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How Does It Compare?
Mileage Analysis
33,035
Average miles
37,000
Expected for age
The average 2021 AUDI A3 SPORT 40 TFSI E S-A has 33,035 miles on the clock, which is in line with the expected 37,000 miles for a 5-year-old car, suggesting normal everyday use.
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AUDI A3 SPORT 40 TFSI E S-A by Year
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About the 2021 AUDI A3 SPORT 40 TFSI E S-A
The 2021 AUDI A3 SPORT 40 TFSI E S-A is a premium with a 1395cc hybrid engine. 3,688 of these vehicles were MOT tested in 2026, making it a reasonably common sight on UK roads. Among all cars from 2021, the average MOT pass rate is 92%, and this model falls short of that benchmark.
With an average of 33,035 miles at 5 years old, AUDI A3 SPORT 40 TFSI E S-A owners drive about as much as the UK average.
2021 AUDI A3 SPORT 40 TFSI E S-A Fuel Costs
The 1395cc hybrid engine offers a reasonable balance between performance and economy. Expect around 42 mpg in mixed driving, which works out to roughly £1,137 per year at current hybrid prices of 142p per litre (based on 7,400 miles per year). As a hybrid, real-world fuel costs will vary significantly depending on how much electric-only driving you do.
What does it cost to own a 2021 AUDI A3 SPORT 40 TFSI E S-A?
Total estimated annual running cost is £1,587 (£132/month), broken down as £1137 fuel, £195 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 90% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
AUDI A3 SPORT 40 TFSI E S-A Reliability Trend
The AUDI A3 SPORT 40 TFSI E S-A has maintained consistent MOT pass rates across model years, varying by only 1 percentage points.
Buying a Used 2021 AUDI A3 SPORT 40 TFSI E S-A
At 5 years old, the AUDI A3 SPORT 40 TFSI E S-A 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 AUDI A3 SPORT 40 TFSI E S-A's fuel type, age, and engine size, these are the most likely problem areas to check.
Hybrid Battery Health
Medium riskAfter 5 years, hybrid battery capacity may have reduced. A full replacement costs £2,000-£4,000, though reconditioning is cheaper at £500-£1,500.
Inverter and Power Electronics
Low riskThe inverter converts DC to AC for the electric motor. Failures are expensive (£1,500+) but relatively rare. Listen for unusual buzzing sounds.
Regenerative Braking
Medium riskBrake discs can corrode from reduced use (the electric motor handles most braking). Surface rust is normal but deep pitting needs attention.
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 AUDI A3 SPORT 40 TFSI E S-A stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| AUDI A3 SPORT 40 TFSI E S-A(2021) | 90% | £1137 | £195 | Grp 8-20 | £1587 |
| TOYOTA YARIS(2019) | 93% | £1137 | £190 | Grp 12-25 | £1582-£5 |
| MINI COOPER S(2019) | 92% | £1137 | £190 | Grp 12-25 | £1582-£5 |
| VOLVO XC40(2021) | 93% | £1137 | £190 | Grp 12-25 | £1582-£5 |
| MINI COUNTRYMAN(2019) | 93% | £1137 | £190 | Grp 12-25 | £1582-£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.
Related Audi Models
Explore other Audi cars or similar models in the same category.
AUDI A3
2015 · 1598cc Diesel
AUDI A1
2016 · 1395cc Petrol
AUDI A4
2017 · 1968cc Diesel
TOYOTA YARIS
2019 · 1497cc Hybrid
MINI COOPER S
2019 · 1499cc Hybrid
VOLVO XC40
2021 · 1470cc Hybrid
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