Pass rate
87.5%
Above average — 13.5 pts ahead of the 74.0% that cars this age and mileage manage.
Across 440 recorded tests.
Typical repair bill £32–£86
2009 Audi S4 MOT pass rate
- 2009
- 2 trims combined
- typical 101,606 mi
Most common fault
Suspension
30.8% of faults · 21.0% nationally
mostly worn arm bushes, split ball-joint boots and broken coil springs.
Which year to buy
- Best 2020 92.9% pass
- Avoid 2003 77.9% pass
Across the 19 years on record, a spread of 15 points. See every year →
- First-attempt pass
- 85.9%
- Typical mileage
- 102k mi
The 2009 Audi S4 MOT pass rate is 87.5% of its MOT tests — 13.5 points ahead of what its age and mileage predict. Suspension is the biggest single reason it fails, at 30.8% of what testers record.
Check your postcode
MOT pass rates are national — type your postcode to see how Audi S4 does in your corner of the country.
Expert verdict
Suspension: 1.5× the national share
Suspension accounts for 30.8% of everything recorded on the 2009 Audi S4, against 21.0% nationally — 9.8 points above. Ask for the front and rear suspension to be checked on a ramp before you buy — worn bushes and broken springs are cheap to look at and expensive to discover at test time.
- Beats its own age and mileage. Once you allow for how old and how far these cars have been driven, the expected pass rate is 74.0% and this one manages 87.5% — 13.5 points ahead of what its age and mileage predict.
- When it fails, it costs. Only 31% of this model’s typical repairs come in under £30 in parts — the failures here tend to be the kind that need a garage rather than a bulb.
Written from this page's own figures: fault shares against the national composition, the like-for-like pass rate, and the priced repair list. How these are worked out
Watching a Audi S4? Get an email when these numbers change .
Every Audi S4 first registered in 2009 is combined here — 2 trim and body variants in total — so the sample is as large as the DVSA data allows.
How does the 2009 Audi S4 compare?
Cars of this age and mileage average 74.0%, so this figure is 13.5 points ahead of what its age and mileage predict. On a first attempt, before any retests, the figure drops to 85.9%. The median 2009 Audi S4 in this dataset had covered 101,606 mi.
98% of the tests on this vehicle ran on Petrol, which passed 87.4% of the time. Pass rates also shift with the test month: tests recorded October–March passed 87.7% of the time, April–September 87.3%.
The single most recorded failure item is "Coil spring fractured or broken", noted on 2.27% of tests.
- 440 recorded tests behind this page.
- 87.5% overall pass rate, 85.9% on a first attempt.
- Across every year of the Audi S4, the average is 87.8% — best year 2020 (92.9%), worst 2003 (77.9%).
Figures count every completed test on this vehicle-year in the dataset, including retests. See methodology for the exact definition.
This page's data
- Tests analysed
- 440
- Typical mileage (median)
- 101,606 mi
- Make and model
- Audi S4
- Updated
- 2026-11-05
Source: DVSA anonymised MOT test data (2023–2025), OGL v3.0.
Top part to budget for
Coil Spring
Usually a DIY or independent-garage job.
Does mileage affect the S4 MOT pass rate?
Pass rate by odometer reading. Bar lengths start at 77% so small gaps stay visible.
Fuel type and reliability
Pass rate by fuel type. Petrol is the most common here (98% of tests).
Regional pass rates for the S4
| Region | Tests | Pass rate |
|---|---|---|
| South East | 95 | 89.5% |
| North West | 52 | 84.6% |
| South West | 49 | 91.8% |
| East of England | 41 | 90.2% |
| Yorkshire | 40 | 85.0% |
| East Midlands | 33 | 75.8% |
| North East | 31 | 93.5% |
| West Midlands | 30 | 86.7% |
| Scotland | 28 | 92.9% |
| London | 24 | 87.5% |
| Wales | 17 | 76.5% |
Regions come from the postcode area recorded at the test station. Areas on region borders are assigned to the region with the majority of their population.
What fails a 2009 S4
Everything a tester recorded on this vehicle, grouped into the inspection sections that produced it. The notch on each bar is the national share, so you can see at a glance whether this car is unusual or just ordinary.
A test can record several items, so these percentages do not add up to 100%. The exact strings, with prices, are in the full DVSA record at the bottom of this page.
Before your test
Three checks worth doing on a 2009 S4
These are not generic tips — they are the faults recorded most often on this exact model, rewritten as things you can check yourself. All three take about ten minutes and cost nothing.
-
Check the coil springs 2.3% of tests
“coil spring fractured or broken”
Look up inside each wheel arch with a torch, all the way round the spring. A snapped spring usually breaks at the very bottom coil, where a quick glance will not reach.
-
Check the lights 2.3% of tests
“registration plate lamp(s) inoperative in the case of multiple lamps or light sources”
Switch everything on and walk round the car: both headlamps on dip and main, every indicator, both brake lights, reverse, fog and the two number-plate lamps. A bulb is a few pounds and a five-minute job.
-
Check the windscreen 2.3% of tests
“windscreen damaged”
Check the driver’s side of the screen within the swept area for chips and cracks; anything larger than 10mm in the driver’s central view is a fail. Most chips can be resin-repaired for far less than a new screen.
Shares are the proportion of tests on this vehicle that recorded the item, so they overlap: one test can record several.
What it costs to get a 2009 S4 through its MOT
Across the 10 items that are recorded most often on this model, the average repair comes to £32–£86 — and 31% of those repairs are parts that cost under £30.
- Average repair across the 10 common items
- £32–£86
- Cheapest common item: electronic stability control warning lamp…
- £3–£15
- Dearest common item: joints constant velocity boot severely…
- £80–£250
- Common items a careful owner can do at home
- 70%
- Repairs that still cost under £30
- 31%
Estimates from typical UK parts prices, weighted by how often each item appears in 440 MOT tests on this vehicle. They exclude diagnostics, retest fees and garage labour where the part is a DIY fit, and they are not figures from the DVSA dataset. Older and higher-mileage examples cost more than the average. How these estimates are built → · All MOT repair costs → · Cheapest cars to put through a test →
Every year of the S4, side by side
19 model years on record, from 2000 to 2022. Across them the pass rate runs from 77.9% to 92.9% — a spread of 15 points. The bar under each year is the item that failed it most often.
- 2000 86.2% joints constant velocity boot…
- 2003 77.9% joints constant velocity boot…
- 2004 80.9% registration plate lamp(s)…
- 2005 83.3% ball joint dust cover severely…
- 2006 81.3% ball joint dust cover severely…
- 2007 81.6% registration plate lamp(s)…
- 2008 84.6% ball joint dust cover severely…
- 2009 87.5%coil spring fractured or broken
- 2010 84.5% windscreen damaged but not…
- 2011 84.6% windscreen damaged but not…
- 2012 85.5% windscreen damaged but not…
- 2013 89.6% windscreen damaged but not…
- 2014 87.1% windscreen damaged but not…
- 2015 92.9% catalyst emissions lambda reading…
- 2017 89.2% windscreen damaged but not…
- 2019 91.8% windscreen damaged but not…
- 2020 92.9% windscreen damaged but not…
- 2021 92.7% windscreen damaged but not…
- 2022 92.4% has ply or cords exposed
Colour is the pass rate on a fixed scale, so a block means the same thing on any model. Each year links to its own page with the full fault breakdown.
Compare the 2009 Audi S4 with another year
The raw pass rate mostly measures age. The year comparison adds the like-for-like figure, the mileage bands and the repair bill.
Other 2009 cars with a similar record
- Toyota Estima 86.7%
- BMW Z4 85.3%
- BMW M3 90.3%
- Porsche Cayman 90.3%
- Jaguar Xk 83.8%
- Porsche 911 91.3%
Closest pass rates among 2009 cars with at least 2,000 tests, so a small sample cannot flatter itself into the list. See the full rankings: best and worst MOT pass rates.
The full DVSA record for the 2009 Audi S4 10 failure items · 6 advisories · 10 inspection categories · mileage brackets · all of it in the page, none of it above the fold
Every inspection category
Shares of the 536 individual items recorded on this vehicle, and the same share across all cars nationally. A single test can record several items, so a row is not a percentage of tests.
| Category | Items | This car | Nationally | Difference |
|---|---|---|---|---|
| Suspension | 166 | 30.80% | 20.98% | +9.82 |
| Tyres | 111 | 20.60% | 19.76% | +0.84 |
| Brakes | 79 | 14.70% | 20.89% | −6.19 |
| Noise, emissions and leaks | 53 | 9.80% | 5.52% | +4.28 |
| Lamps, reflectors and electrical equipment | 41 | 7.60% | 12.21% | −4.61 |
| Non-component advisories | 34 | 6.30% | 4.18% | +2.12 |
| Body, chassis, structure | 23 | 4.30% | 5.57% | −1.27 |
| Visibility | 22 | 4.10% | 4.97% | −0.87 |
| Identification of the vehicle | 5 | 0.90% | 1.76% | −0.86 |
| Steering | 2 | 0.40% | 2.57% | −2.17 |
The exact failure items, in the tester's words
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Coil spring fractured or broken Suspension | Major | 2.3% | £25–65 |
| Registration plate lamp(s) inoperative in the case of multiple lamps or light sources Lamps, reflectors and electrical equipment | Minor | 2.3% | £5–20 |
| Windscreen damaged but not adversely affecting driver's view Visibility | Minor | 2.3% | £80–200 |
| Position lamp with a multiple light source up to 1/2 not functioning Lamps, reflectors and electrical equipment | Minor | 1.6% | £5–25 |
| Ball joint dust cover severely deteriorated Suspension | Minor | 1.4% | £18–45 |
| Has ply or cords exposed Tyres | Major | 1.4% | £45–95 |
| Headlamp aim too high Lamps, reflectors and electrical equipment | Rectified | 1.1% | £30–80 |
| Joints constant velocity boot severely deteriorated Body, chassis, structure | Minor | 1.1% | £80–250 |
| Ball joint excessively worn Suspension | Major | 0.91% | £18–45 |
| Electronic stability control warning lamp indicates a fault Brakes | Major | 0.91% | £3–15 |
Severity is as recorded: Major and Dangerous fail the test outright; Minor and Advisory do not. Costs are estimates from typical UK parts prices — see how they are built.
What testers noted without failing the car
Advisories are the early warnings — the same parts a year or two before they fail. Reading them is how you tell a car that has been maintained from one that has been patched.
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Pins and bushes pin or bush excessively worn Suspension | Advisory | 13.6% | £40–150 |
| Tread depth below requirements of 1.6mm Tyres | Advisory | 12.5% | £45–95 |
| Engine oil leaks leaking excessively from engine Noise, emissions and leaks | Advisory | 6.4% | £200–700 |
| Brake pads less than 1.5 mm thick Brakes | Advisory | 5.9% | £18–45 |
| Sub-frame corroded and seriously weakened Suspension | Advisory | 5.2% | £180–450 |
| Coil spring corroded so that its cross sectional area is reduced and seriously weakened Suspension | Advisory | 5.0% | £25–65 |
Pass rate by mileage
| Mileage | Tests | Pass rate | Median odometer |
|---|---|---|---|
| 0-30k | 4 | 100.0% | 25,602 mi |
| 30-60k | 21 | 85.7% | 49,783 mi |
| 60-90k | 132 | 88.6% | 77,642 mi |
| 90-120k | 199 | 85.9% | 106,022 mi |
| 120k+ | 84 | 89.3% | 139,426 mi |
Source: 440 recorded tests on this vehicle-year. Every row above is recomputed from the same DVSA extract as the rest of the page — see the methodology.
2009 S4 MOT questions
What is the MOT pass rate for a 2009 Audi S4?
87.5% of the 440 2009 Audi S4 tests in this dataset passed, against a national average of 74.0% for cars first used in 2009. First-attempt pass rate: 85.9%.
What are the most common MOT failures on a 2009 Audi S4?
The three most recorded items are coil spring fractured or broken (2.27%), registration plate lamp(s) inoperative in the case of multiple lamps or light sources (2.27%), windscreen damaged but not adversely affecting driver's view (2.27%). Percentages are the share of tests on this vehicle that recorded the item.
Does mileage affect the 2009 Audi S4 MOT pass rate?
Yes. Cars under 30,000 miles passed 100.0% of the time, falling to 89.3% for those over 120,000 miles. The median 2009 Audi S4 in this dataset had covered 101,606 mi.
Which fuel type is most reliable for a 2009 Audi S4?
Petrol: 87.4% pass rate across 430 tests. Diesel: 90.0% pass rate across 10 tests. Shares are of the tests on this vehicle that recorded each fuel type.
Does the season affect the 2009 Audi S4 MOT pass rate?
Tests recorded in the winter months (October–March) passed 87.7% of the time; summer months (April–September) passed 87.3%. Brakes, tyres and lights are tested harder in bad weather, but the difference is small on most models.