Audi A4 S Line 35 TDI MHEV S-A
Reliability, estimated running costs, and MOT data across 3 model years from 2,354 MOT tests in 2024.
Avg Pass Rate
84%
Total Tests
2,354
Highest Pass Rate
2021 (91%)
Years Covered
3
About the Audi A4 S Line 35 TDI MHEV S-A
The Audi A4 S Line 35 TDI MHEV S-A was MOT tested 2,354 times in 2024 (DVSA data, retests included) across 3 model years (2020 to 2022), with an average pass rate of 84%. That's slightly above the average of 82% across all models in our data. Our records list diesel versions.
Best and Worst Years
Of the years with at least 100 tests, the 2021 model has the highest pass rate at 91% from 2,222 tests. The 2020 model has the lowest at 90%. With just a 1 point gap, pass rates are similar across these years. Newer cars usually pass more often simply because they are younger.
Mileage Across Years
The oldest model in our data (2020) averages 39,169 miles, while the newest (2022) averages 39,647 miles.
Compared to the Audi brand average of 90%, the A4 S Line 35 TDI MHEV S-A is 6 points lower, placing it among the less reliable Audi models.
Estimated Running Costs
Higher due to low pass rate
Based on 7,400 miles/year, average pump prices of 174.57p petrol and 199.33p diesel (GOV.UK weekly road fuel prices, week of 19 October 2026), and MOT pass rate data. Insurance not included.
Full 2022 detailsHow reliable is the Audi A4 S Line 35 TDI MHEV S-A?
Audi A4 S Line 35 TDI MHEV S-A by Year
Click any year to see detailed running costs, reliability data, and comparisons with similar cars.
Questions about the Audi A4 S Line 35 TDI MHEV S-A
Is the Audi A4 S Line 35 TDI MHEV S-A reliable?
Across its 3 model years in our data (2020 to 2022), the Audi A4 S Line 35 TDI MHEV S-A averages an 84% MOT pass rate, from 2,354 tests (DVSA MOT data for tests in 2024, retests included). That's 2 points above the average of 82% across all models in the same data. The 2021 model has the highest pass rate of the years with at least 100 tests, at 91%.
Which year Audi A4 S Line 35 TDI MHEV S-A has the best MOT pass rate?
Of the years with at least 100 tests, the 2021 Audi A4 S Line 35 TDI MHEV S-A has the highest MOT pass rate at 91%, while the 2020 model has the lowest at 90%, a 1 point gap. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.
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