Audi S4 TDI Quattro Auto
Reliability, estimated running costs, and MOT data across 2 model years from 825 MOT tests in 2024.
Avg Pass Rate
96%
Total Tests
825
Highest Pass Rate
2019 (96%)
Years Covered
2
About the Audi S4 TDI Quattro Auto
The Audi S4 TDI Quattro Auto was MOT tested 825 times in 2024 (DVSA data, retests included) across 2 model years (2019 to 2020), with an average pass rate of 96%. That's comfortably 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 2019 model has the highest pass rate at 96% from 295 tests. The 2020 model has the lowest at 95%. 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 (2019) averages 43,445 miles, while the newest (2020) averages 42,748 miles.
Compared to the Audi brand average of 90%, the S4 TDI Quattro Auto performs 6 points better, making it one of the more reliable options in the Audi range.
Estimated Running Costs
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 2020 detailsHow reliable is the Audi S4 TDI Quattro Auto?
Audi S4 TDI Quattro Auto by Year
Click any year to see detailed running costs, reliability data, and comparisons with similar cars.
Questions about the Audi S4 TDI Quattro Auto
Is the Audi S4 TDI Quattro Auto reliable?
Across its 2 model years in our data (2019 to 2020), the Audi S4 TDI Quattro Auto averages a 96% MOT pass rate, from 825 tests (DVSA MOT data for tests in 2024, retests included). That's 14 points above the average of 82% across all models in the same data. The 2019 model has the highest pass rate of the years with at least 100 tests, at 96%.
Which year Audi S4 TDI Quattro Auto has the best MOT pass rate?
Of the years with at least 100 tests, the 2019 Audi S4 TDI Quattro Auto has the highest MOT pass rate at 96%, while the 2020 model has the lowest at 95%, 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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