AUDI Q3 S LINE 35 TFSI (2021)
Running costs, common problems, and reliability data based on 2,570 real MOT tests in 2024.
MOT Pass Rate
94%
Total Tests (2024)
2,570
Avg Mileage
25,930 mi
Est. Annual Cost
£1,582
Is the 2021 AUDI Q3 S LINE 35 TFSI reliable?
Excellent reliability. Very few MOT failures. That's 12 points above the national average of 82%. It also outperforms the AUDI brand average of 90%.
At 3 years old, 94% of AUDI Q3 S LINE 35 TFSIs from 2021 passed their MOT first time in 2024. That's based on 2,570 tests across the UK. The average mileage at this age is 25,930 miles.
How does the 2021 AUDI Q3 S LINE 35 TFSI compare?
Mileage Analysis
The average 2021 AUDI Q3 S LINE 35 TFSI has 25,930 miles on the clock, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.
Best year to buy a AUDI Q3 S LINE 35 TFSI?
The most reliable year is the 2020 model with a 94% MOT pass rate, while the 2022 model has the lowest at 88%. The 2021 sits between the two at 94%.
How much does a 2021 AUDI Q3 S LINE 35 TFSI 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 Q3 S LINE 35 TFSI by Year
Checking a specific AUDI Q3 S LINE 35 TFSI?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 AUDI Q3 S LINE 35 TFSI
The 2021 AUDI Q3 S LINE 35 TFSI is a premium with a 1498cc petrol engine. 2,570 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. Among all cars from 2021, the average MOT pass rate is 92%, and this model beats that benchmark.
With an average of 25,930 miles at 3 years old, AUDI Q3 S LINE 35 TFSI owners drive about as much as the UK average.
2021 AUDI Q3 S LINE 35 TFSI Fuel Costs
The 1498cc petrol 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 petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2021 AUDI Q3 S LINE 35 TFSI?
Total estimated annual running cost is £1,582 (£132/month), broken down as £1137 fuel, £190 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 94% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
AUDI Q3 S LINE 35 TFSI Reliability Trend
The AUDI Q3 S LINE 35 TFSI has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.
Buying a Used 2021 AUDI Q3 S LINE 35 TFSI
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. If you're flexible on year, the 2020 model has the highest pass rate at 94%.
Alternatives to the 2021 AUDI Q3 S LINE 35 TFSI
The AUDI Q3 S LINE 35 TFSI is actually the most reliable option among similar petrol premiums from this era. Here are comparable petrol cars with similar engines:
- FORD FIESTA (2019) 91% pass rate (-3%) from 124,950 tests
- VOLKSWAGEN GOLF (2019) 92% pass rate (-2%) from 89,653 tests
- VAUXHALL CORSA (2019) 88% pass rate (-6%) from 68,639 tests
- NISSAN QASHQAI (2020) 93% pass rate (-1%) from 52,321 tests