Audi S4 Avant Reliability, MOT Pass Rate & Common Faults
Free Audi S4 Avant car check
Is the Audi S4 Avant reliable? We analysed 8,071 real MOT tests across 545 vehicles to find out.
Got a specific Audi S4 Avant? Enter the reg for a free check:
The Audi S4 Avant is above average for reliability based on real UK MOT data. Common problems include tyre tread depth below requirements of 1.6mm, tyre has ply or cords exposed and position lamp(s) not working. Here's everything you need to know before buying a used Audi S4 Avant.
Audi S4 Avant Number Plates
Number plates registered to a Audi S4 Avant. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Audi S4 Avant MOT Pass Rate by Year
How likely is a Audi S4 Avant to pass its MOT? Here's the pass rate for each registration year, newest first.
Audi S4 Avant Problems — What Goes Wrong?
The most common reasons a Audi S4 Avant fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Audi S4 Avant Common Faults & Problems
These are the most common serious faults found on Audi S4 Avant models during MOT testing — flagged as dangerous or major failures that need immediate attention.
Audi S4 Avant Mileage — What's Normal?
How many miles does a typical Audi S4 Avant owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Audi S4 Avant MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Audi S4 Avant year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2012 | 403 | 87.6% | 43,777 | 69,652 | 93,596 |
| 2011 | 525 | 88.8% | 43,756 | 65,741 | 92,935 |
| 2010 | 993 | 85.2% | 50,646 | 75,238 | 97,718 |
| 2009 | 660 | 86.5% | 51,701 | 77,894 | 102,981 |
| 2008 | 187 | 79.7% | 38,892 | 68,027 | 94,427 |
| 2007 | 383 | 82.2% | 56,675 | 85,465 | 111,959 |
| 2006 | 781 | 83.1% | 50,188 | 81,632 | 107,170 |
| 2005 | 1,035 | 82.9% | 61,313 | 86,880 | 116,588 |
| 2004 | 1,495 | 78.2% | 61,917 | 88,332 | 112,712 |
| 2003 | 1,217 | 75.5% | 68,424 | 95,732 | 122,712 |
| 2000 | 133 | 79.7% | 60,367 | 100,873 | 138,596 |
| 1999 | 65 | 70.8% | 105,191 | 134,422 | 181,583 |
How Long Does a Audi S4 Avant Last?
Based on 545 Audi S4 Avant vehicles on UK roads.
Audi S4 Avant Mileage Distribution
Total mileage recorded across all Audi S4 Avant 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 S4 Avant
Based on MOT pass rates across all registration years with sufficient test data.
88.8% MOT pass rate from 525 tests
70.8% MOT pass rate from 65 tests
The best year to buy a used Audi S4 Avant is 2011, which has the highest MOT pass rate at 88.8% across 525 tests. The 1999 model year has the lowest pass rate at 70.8% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Audi S4 Avant Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Audi S4 Avant THIS CAR | 81.7% | 8,071 | 83,553 mi | 26 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 |
| Harley Davidson Fxstbi | 90.8% | 2,553 | 14,076 mi | 22 yrs |
Compared to the Audi A3 (78.0% pass rate) and the Audi A4 (76.1% pass rate), the Audi S4 Avant outperforms both on MOT reliability.
Found a Audi S4 Avant 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 S4 AvantShould you buy a used Audi S4 Avant?
The Audi S4 Avant has an overall MOT pass rate of 81.7% across 8,071 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
The most common problems on the Audi S4 Avant are tyre tread depth below requirements of 1.6mm (156 recorded failures), tyre has ply or cords exposed (75), and position lamp(s) not working (68). These are the faults most likely to cause an MOT failure on this model, so check for them carefully on any test drive or pre-purchase inspection. Many are wear-and-tear items that can be budgeted for, but a car that's already failing on multiple fronts may signal neglected maintenance.
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 S4 Avant 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 S4 Avant owner drives around 5,956 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.
In terms of longevity, most Audi S4 Avant models stay on UK roads for around 26 years — a strong showing that suggests solid build quality and readily available parts. If you're buying one that's already approaching that window, the data suggests it has plenty of life left provided it's been maintained.
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.