AUDI A4 S LINE 35 TFSI MHEV (2021)
Running costs, common problems, and reliability data based on 223 real MOT tests in 2024.
MOT Pass Rate
91%
Total Tests (2024)
223
Avg Mileage
24,390 mi
Est. Annual Cost
£1,772
Is the 2021 AUDI A4 S LINE 35 TFSI MHEV reliable?
Excellent reliability. Very few MOT failures. That's 9 points above the national average of 82%.
At 3 years old, 91% of AUDI A4 S LINE 35 TFSI MHEVs from 2021 passed their MOT first time in 2024. That's based on 223 tests across the UK. The average mileage at this age is 24,390 miles.
How does the 2021 AUDI A4 S LINE 35 TFSI MHEV compare?
Mileage Analysis
The average 2021 AUDI A4 S LINE 35 TFSI MHEV has 24,390 miles on the clock, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.
How much does a 2021 AUDI A4 S LINE 35 TFSI MHEV cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
AUDI A4 S LINE 35 TFSI MHEV by Year
Checking a specific AUDI A4 S LINE 35 TFSI MHEV?
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About the 2021 AUDI A4 S LINE 35 TFSI MHEV
The 2021 AUDI A4 S LINE 35 TFSI MHEV is a premium with a 1984cc petrol engine. 223 of these vehicles were MOT tested in 2024, 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 24,390 miles at 3 years old, AUDI A4 S LINE 35 TFSI MHEV owners drive about as much as the UK average.
2021 AUDI A4 S LINE 35 TFSI MHEV Fuel Costs
The 1984cc petrol engine offers a reasonable balance between performance and economy. Expect around 36 mpg in mixed driving, which works out to roughly £1,327 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 AUDI A4 S LINE 35 TFSI MHEV?
Total estimated annual running cost is £1,772 (£148/month), broken down as £1327 fuel, £190 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.
Buying a Used 2021 AUDI A4 S LINE 35 TFSI MHEV
At 3 years old, this is still relatively fresh. You may find examples with remaining manufacturer warranty. Depreciation is slowing but hasn't bottomed out yet.
Alternatives to the 2021 AUDI A4 S LINE 35 TFSI MHEV
If reliability is your priority, there are 3 similar cars with a higher MOT pass rate. Here are comparable petrol cars with similar engines:
- VOLKSWAGEN GOLF (2019) 92% pass rate (+1%) from 89,653 tests
- NISSAN QASHQAI (2020) 93% pass rate (+2%) from 52,321 tests
- MINI COOPER (2019) 92% pass rate (+1%) from 52,140 tests
- HYUNDAI TUCSON (2019) 90% pass rate (-1%) from 42,920 tests