Audi A4 S Line TDI S-a Reliability, MOT Pass Rate & Common Faults
Free Audi A4 S Line TDI S-a car check
Is the Audi A4 S Line TDI S-a reliable? We analysed 1,369 real MOT tests across 384 vehicles to find out.
Got a specific Audi A4 S Line TDI S-a? Enter the reg for a free check:
The Audi A4 S Line TDI S-a is above average for reliability based on real UK MOT data. Here's everything you need to know before buying a used Audi A4 S Line TDI S-a.
Audi A4 S Line TDI S-a Number Plates
Number plates registered to a Audi A4 S Line TDI S-a. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Audi A4 S Line TDI S-a Common Faults & Problems
These are the most common serious faults found on Audi A4 S Line TDI S-a models during MOT testing — flagged as dangerous or major failures that need immediate attention.
Audi A4 S Line TDI S-a Mileage — What's Normal?
How many miles does a typical Audi A4 S Line TDI S-a owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Audi A4 S Line TDI S-a Mileage Distribution
Total mileage recorded across all Audi A4 S Line TDI S-a MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.
How Does the Audi A4 S Line TDI S-a Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Audi A4 S Line TDI S-a THIS CAR | 91.2% | 1,369 | 78,795 mi | — yrs |
| Audi A3 | 78% | 7,415,025 | 78,776 mi | 29 yrs |
| Audi A4 | 76.1% | 7,096,957 | 96,834 mi | 31 yrs |
| Audi A6 | 78.4% | 2,724,792 | 98,890 mi | 31 yrs |
| Hyundai Santa Fe Style CRDI | 79.7% | 576 | 108,547 mi | — yrs |
Compared to the Audi A3 (78.0% pass rate) and the Audi A4 (76.1% pass rate), the Audi A4 S Line TDI S-a outperforms both on MOT reliability.
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Run a full vehicle history check on the specific car. See finance, stolen, write-off, mileage and MOT data for that exact vehicle.
Check a specific Audi A4 S Line TDI S-aShould you buy a used Audi A4 S Line TDI S-a?
The Audi A4 S Line TDI S-a has an overall MOT pass rate of 91.2% across 1,369 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
On the safety side, the most frequently flagged dangerous fault is tyre tread depth below requirements of 1.6mm both front. Dangerous faults cause an immediate MOT failure and mean the vehicle is not roadworthy until repaired. If you're viewing a Audi A4 S Line TDI S-a with an expired or recently passed MOT, ask the seller whether any dangerous faults were found and fixed during the last test.
A typical Audi A4 S Line TDI S-a owner drives around 10,102 miles per year. If the car you're looking at is significantly above this, expect more wear on suspension, brakes and tyres. If it's well below, the vehicle may have been sitting unused — check for perished rubber, corroded discs and stale fluids.
Before committing to a purchase, we recommend running a full vehicle history check on the specific car. This will reveal any outstanding finance, stolen markers, write-off history and mileage discrepancies that the seller may not disclose — and that the MOT data alone can't tell you.