Audi RS4 B9 (2018-2024) reliability
Audi RS4 B9 built around 2020: not enough MOT data yet
We've only seen a handful of Audi RS4 B9 models built around 2020 so far. Too few to spot a pattern yet.
Looking at an Audi RS4 B9?
Enter its number plate to see its full MOT history, risk rating and running costs.
Key figure
Check a car’s number plate to see its own MOT record, or come back when there’s more MOT history.
Based on 948 tests of RS4 models registered 2018-2024.
About 1 in 10 petrol RS4 cars registered in 2022 (10.2%) failed their first MOT.
Based on 206 first MOTs (DVSA MOT results, 2025).
B9 fail rate by age
Fail rate is the share of MOT tests that ended in a fail. Retests count as tests. How we count fail rates Build years are worked out from age, so they are approximate. Tests counted are 2025 MOTs. Highest fail rate at 3 years old.
How the RS4 B9 compares
At each age below, see how the RS4 B9 holds up against other cars the same age. The averages combine all fuel types.
Based on 119,144 tests across 23 Audi models, built around 2020 (5 years old).
Fail rate is the share of MOT tests that ended in a fail. Retests count as tests. How we count fail rates Build years are worked out from age, so they are approximate. Tests counted are 2025 MOTs.
What to check before viewing
The model's most common MOT issues, turned into things you can ask about or look for.
Brake pads
High priorityAsk when the pads were last replaced and check the warning-light history.
Brake discs
High priorityAsk for the date and mileage of the last disc replacement; visually check for a deep wear lip and rust pitting on each disc.
Tyres
Worth checkingCheck tread depth across the full width on all four; uneven wear suggests alignment or suspension issues.
Suspension springs
Worth checkingCheck ride height is even side-to-side and look for cracked or rusted coils.
Shock absorbers
Worth checkingBounce-test each corner; check for oily streaks down the strut bodies.
Vehicle-specific check
Worth checkingCheck the car’s number plate on MOT Wise to see its own MOT history and any recalls for its build years.
Other estates to compare
Other estates, with each one's figures taken at the same age as the RS4 B9.
- 1
Kia ProCeed
Same body type, tested at the same age
- Fail rate
- 14.3%
- Fail, no pass in 3 days
- 2.4%
- Dangerous
- 6.9%
No clear edge over the Audi RS4 B9 on these figures.
1,632 MOT tests on cars built around 2020
- 2
Volvo V90
Same body type, tested at the same age
- Fail rate
- 13.9%
- Fail, no pass in 3 days
- 2.8%
- Dangerous
- 5.9%
No clear edge over the Audi RS4 B9 on these figures.
2 critical recall campaigns matching this model/build period.
3,331 MOT tests on cars built around 2020
- 3
Volvo V60
Same body type, tested at the same age
- Fail rate
- 13.7%
- Fail, no pass in 3 days
- 2.2%
- Dangerous
- 6.2%
- Still registered at 10 years
- 89.4%
No clear edge over the Audi RS4 B9 on these figures.
4 critical recall campaigns matching this model/build period.
4,183 MOT tests on cars built around 2020
- Fail rate
- = the share of MOT tests that ended in a fail. Retests count as tests.
- Fail, no pass in 3 days
- = the share of MOT tests that failed and still hadn't passed 3 days later. A fail that passed a retest within 3 days, even the same day, isn't counted.
- Dangerous
- = the share of MOT tests where the tester marked a fault as dangerous. It is against the law to drive the car until it is fixed.
- Still registered at 10 years
- = the share of cars still registered (taxed or declared off the road) 10 years after they were first registered.
Recall context
DVSA's recall list has no recalls filed under the Audi RS4 name. For the exact car, check with the maker or GOV.UK's recall checker.
How RS4 B9 cars have aged
How RS4 B9 cars have aged
How fail rates have changed as these cars got older. Each line follows cars first registered in about the same year across several years of MOT data. Not a prediction for any one car.
Some lines cover only a year or two, so read this as a rough guide.
Most common issues on Audi RS4 models of this age
This list covers every Audi RS4 built around 2020, whichever generation it is. We don't have a defect list for the B9 on its own.
Most common advisories and fails
In order of the share of MOT tests that recorded each one
- 111.0%Advisory
Brake pads wearing thin
- 26.9%Advisory
Brake disc worn, pitted or scored, but not seriously weakened
- 36.9%Advisory
Coil spring corroded
- 46.0%Advisory
Tyre worn close to the legal limit or worn on the edge
- 55.0%Advisory
Shock absorber has a light misting of oil
Based on 218 tests
Looking at an Audi RS4 B9?
Enter its number plate to see its full MOT history, risk rating and running costs.
Frequently asked questions
Built around 2020 (5 years old), the Audi RS4 B9 (2018-2024) fails MOTs noticeably less often than typical for this age. This is based on 218 5-year-old MOT tests from DVSA data. Each retest counts as a test.