AUDI A3 E-TRON 40 S-A (2020)
Running costs, reliability data, and common problems from 1,880 real MOT tests.
Annual Cost
£1,737
£145/month
MOT Pass Rate
88%
Good
Road Tax
£195
Flat rate/year
Insurance
Grp 8-20
1395cc Hybrid
Solid Option
88% pass rate, £1737/year to run. 6 points above average.
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Annual Running Costs
~42 mpg
Flat rate (post-2017)
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
Good reliability. Occasional issues but generally solid. That's 6 points above the national average of 82%.
At 6 years old, 88% of AUDI A3 E-TRON 40 S-As from 2020 passed their MOT first time in 2026. That's based on 1,880 tests across the UK. The average mileage at this age is 38,483 miles.
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How Does It Compare?
Mileage Analysis
38,483
Average miles
44,400
Expected for age
The average 2020 AUDI A3 E-TRON 40 S-A has 38,483 miles on the clock, which is in line with the expected 44,400 miles for a 6-year-old car, suggesting normal everyday use.
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About the 2020 AUDI A3 E-TRON 40 S-A
The 2020 AUDI A3 E-TRON 40 S-A is a premium with a 1395cc hybrid engine. 1,880 of these vehicles were MOT tested in 2026, making it a reasonably common sight on UK roads. It sits in the bottom 81% of 2020 cars for MOT pass rates.
With an average of 38,483 miles at 6 years old, AUDI A3 E-TRON 40 S-A owners drive about as much as the UK average.
2020 AUDI A3 E-TRON 40 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 2020 AUDI A3 E-TRON 40 S-A?
Total estimated annual running cost is £1,737 (£145/month), broken down as £1137 fuel, £195 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 88% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2020 AUDI A3 E-TRON 40 S-A
At 6 years old, the AUDI A3 E-TRON 40 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 2020 AUDI A3 E-TRON 40 S-A's fuel type, age, and engine size, these are the most likely problem areas to check.
Hybrid Battery Health
Medium riskAfter 6 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 2020 AUDI A3 E-TRON 40 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 E-TRON 40 S-A(2020) | 88% | £1137 | £195 | Grp 8-20 | £1737 |
| TOYOTA YARIS(2018) | 91% | £1137 | £190 | Grp 8-20 | £1582-£155 |
| MINI COOPER S(2019) | 92% | £1137 | £190 | Grp 12-25 | £1582-£155 |
| TOYOTA C-HR(2018) | 90% | £1327 | £190 | Grp 18-32 | £1772+£35 |
| VOLVO XC40(2021) | 93% | £1137 | £190 | Grp 12-25 | £1582-£155 |
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
2018 · 1349cc Hybrid
MINI COOPER S
2019 · 1499cc Hybrid
TOYOTA C-HR
2018 · 1797cc Hybrid
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