Audi A3 S Line 138 TDI Reliability, MOT Pass Rate & Common Faults
Free Audi A3 S Line 138 TDI car check
Is the Audi A3 S Line 138 TDI reliable? We analysed 794 real MOT tests across 111 vehicles to find out.
Got a specific Audi A3 S Line 138 TDI? Enter the reg for a free check:
The Audi A3 S Line 138 TDI is above average for reliability based on real UK MOT data. Here's everything you need to know before buying a used Audi A3 S Line 138 TDI.
Audi A3 S Line 138 TDI Number Plates
Number plates registered to a Audi A3 S Line 138 TDI. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Audi A3 S Line 138 TDI Mileage — What's Normal?
How many miles does a typical Audi A3 S Line 138 TDI owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Audi A3 S Line 138 TDI Mileage Distribution
Total mileage recorded across all Audi A3 S Line 138 TDI 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 A3 S Line 138 TDI Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Audi A3 S Line 138 TDI THIS CAR | 82.9% | 794 | 120,260 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 |
| Honda CD125T | 78.9% | 1,096 | 23,772 mi | 44 yrs |
Compared to the Audi A3 (78.0% pass rate) and the Audi A4 (76.1% pass rate), the Audi A3 S Line 138 TDI outperforms both on MOT reliability.
Found a Audi A3 S Line 138 TDI you like?
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 A3 S Line 138 TDIShould you buy a used Audi A3 S Line 138 TDI?
The Audi A3 S Line 138 TDI has an overall MOT pass rate of 82.9% across 794 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
A typical Audi A3 S Line 138 TDI owner drives around 7,852 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.