Audi A6 S Line 40 TDI MHEV QUAT S-a Reliability, MOT Pass Rate & Common Faults
Free Audi A6 S Line 40 TDI MHEV QUAT S-a car check
Is the Audi A6 S Line 40 TDI MHEV QUAT S-a reliable? We analysed 533 real MOT tests across 411 vehicles to find out.
Got a specific Audi A6 S Line 40 TDI MHEV QUAT S-a? Enter the reg for a free check:
The Audi A6 S Line 40 TDI MHEV QUAT 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 A6 S Line 40 TDI MHEV QUAT S-a.
Audi A6 S Line 40 TDI MHEV QUAT S-a Number Plates
Number plates registered to a Audi A6 S Line 40 TDI MHEV QUAT S-a. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Audi A6 S Line 40 TDI MHEV QUAT S-a MOT Pass Rate by Year
How likely is a Audi A6 S Line 40 TDI MHEV QUAT S-a to pass its MOT? Here's the pass rate for each registration year, newest first.
Audi A6 S Line 40 TDI MHEV QUAT S-a Problems — What Goes Wrong?
The most common reasons a Audi A6 S Line 40 TDI MHEV QUAT S-a fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Audi A6 S Line 40 TDI MHEV QUAT S-a Common Faults & Problems
These are the most common serious faults found on Audi A6 S Line 40 TDI MHEV QUAT S-a models during MOT testing — flagged as dangerous or major failures that need immediate attention.
Audi A6 S Line 40 TDI MHEV QUAT S-a Mileage — What's Normal?
How many miles does a typical Audi A6 S Line 40 TDI MHEV QUAT S-a owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Audi A6 S Line 40 TDI MHEV QUAT S-a MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Audi A6 S Line 40 TDI MHEV QUAT S-a year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2023 | 166 | 91.0% | 22,026 | 30,914 | 44,491 |
| 2022 | 296 | 91.9% | 27,348 | 37,096 | 49,232 |
| 2021 | 50 | 98.0% | 30,486 | 48,611 | 65,335 |
How Long Does a Audi A6 S Line 40 TDI MHEV QUAT S-a Last?
Based on 411 Audi A6 S Line 40 TDI MHEV QUAT S-a vehicles on UK roads.
Audi A6 S Line 40 TDI MHEV QUAT S-a Mileage Distribution
Total mileage recorded across all Audi A6 S Line 40 TDI MHEV QUAT S-a MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.
Best Year to Buy a Used Audi A6 S Line 40 TDI MHEV QUAT S-a
Based on MOT pass rates across all registration years with sufficient test data.
98.0% MOT pass rate from 50 tests
91.0% MOT pass rate from 166 tests
The best year to buy a used Audi A6 S Line 40 TDI MHEV QUAT S-a is 2021, which has the highest MOT pass rate at 98.0% across 50 tests. The 2023 model year has the lowest pass rate at 91.0% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Audi A6 S Line 40 TDI MHEV QUAT 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 A6 S Line 40 TDI MHEV QUAT S-a THIS CAR | 92.3% | 533 | 36,593 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 |
| Peugeot 3008 Active Bluehdi S/s | 95.1% | 364 | 55,042 mi | — yrs |
Compared to the Audi A3 (78.0% pass rate) and the Audi A4 (76.1% pass rate), the Audi A6 S Line 40 TDI MHEV QUAT S-a outperforms both on MOT reliability.
Found a Audi A6 S Line 40 TDI MHEV QUAT S-a 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 A6 S Line 40 TDI MHEV QUAT S-aShould you buy a used Audi A6 S Line 40 TDI MHEV QUAT S-a?
The Audi A6 S Line 40 TDI MHEV QUAT S-a has an overall MOT pass rate of 92.3% across 533 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
The most common failure point is brake disc in such a condition that it is seriously weakened with 2 recorded occurrences. Check for this on any test drive or pre-purchase inspection.
On the safety side, the most frequently flagged dangerous fault is tyre tread depth below requirements of 1.6mm. Dangerous faults cause an immediate MOT failure and mean the vehicle is not roadworthy until repaired. If you're viewing a Audi A6 S Line 40 TDI MHEV QUAT 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 A6 S Line 40 TDI MHEV QUAT S-a owner drives around 10,764 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.