AUDI Q3 S LINE 35 TDI (2021)
Running costs, common problems, and reliability data based on 87 real MOT tests in 2024.
MOT Pass Rate
85%
Total Tests (2024)
87
Avg Mileage
32,918 mi
Est. Annual Cost
£1,632
Is the 2021 AUDI Q3 S LINE 35 TDI reliable?
Good reliability. Occasional issues but generally solid. That's close to the national average of 82%. It falls below the AUDI brand average of 90%.
At 3 years old, 85% of AUDI Q3 S LINE 35 TDIs from 2021 passed their MOT first time in 2024. That's based on 87 tests across the UK. The average mileage at this age is 32,918 miles.
How does the 2021 AUDI Q3 S LINE 35 TDI compare?
Mileage Analysis
The average 2021 AUDI Q3 S LINE 35 TDI has 32,918 miles on the clock, which is above the expected 22,200 miles for a 3-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.
How much does a 2021 AUDI Q3 S LINE 35 TDI 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.
Checking a specific AUDI Q3 S LINE 35 TDI?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 AUDI Q3 S LINE 35 TDI
The 2021 AUDI Q3 S LINE 35 TDI is a premium with a 1968cc diesel engine. 87 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. It sits in the bottom 93% of 2021 cars for MOT pass rates.
With an average of 32,918 miles at 3 years old, AUDI Q3 S LINE 35 TDI owners cover more miles than the average driver.
2021 AUDI Q3 S LINE 35 TDI Fuel Costs
The 1968cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,037 per year at current diesel prices of 148p per litre (based on 7,400 miles per year).
What does it cost to own a 2021 AUDI Q3 S LINE 35 TDI?
Total estimated annual running cost is £1,632 (£136/month), broken down as £1037 fuel, £190 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 85% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2021 AUDI Q3 S LINE 35 TDI
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. Note: with only 87 tests in our data, these figures should be treated as indicative rather than definitive.
Alternatives to the 2021 AUDI Q3 S LINE 35 TDI
If reliability is your priority, there are 4 similar cars with a higher MOT pass rate. Here are comparable diesel cars with similar engines:
- FORD FOCUS (2019) 89% pass rate (+4%) from 93,803 tests
- FORD KUGA (2019) 91% pass rate (+6%) from 72,831 tests
- VOLKSWAGEN POLO (2019) 89% pass rate (+4%) from 65,751 tests
- FORD TRANSIT CUSTOM (2019) 87% pass rate (+2%) from 59,814 tests