Should I check the MOT history before buying a 2021 Audi RS 4 Carbon Black TFSI Quat A?

Yes. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. A full MOT history analysis will highlight patterns that a single test result won't reveal.

What corrosion should I look for when inspecting a 2021 Audi RS 4 Carbon Black TFSI Quat A?

Check brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that is expensive to fix and can fail an MOT.

How are tyres and brakes typically on a 2021 Audi RS 4 Carbon Black TFSI Quat A?

Tyres and brakes are the most common advisory items on vehicles of this age. Budget for replacement if they are near the limit, and factor this into your offer price.

Is the 2021 Audi RS 4 Carbon Black TFSI Quat A reliable?

Based on MOT data from 252 vehicles, the 2021 Audi RS 4 Carbon Black TFSI Quat A has a first-time MOT pass rate of 94%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

Do I need an HPI check when buying a 2021 Audi RS 4 Carbon Black TFSI Quat A?

Yes. The MOT history will not show outstanding finance, insurance write-offs, or stolen status. An HPI check covers these areas and should be part of any used car purchase.

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Audi RS 4 Carbon Black TFSI Quat A (2021)

252 real MOT outcomes analysed • 94% first-time pass rate

2021 Audi RS 4 Carbon Black TFSI Quat A

CarHunch analysed 252 real MOT records for the 2021 Audi RS 4 Carbon Black TFSI Quat A. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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AI Analysis Reliability Overview Check a Specific Reg Buyer's Checklist Pass Rate by Fuel Mileage Distribution MOT Averages Colour Breakdown Compare Models

This 2021 Audi RS 4 is a strong performer on the MOT bench, with a first-time pass rate of 91.8%—well above the UK average of 80%—and only 6.3% of vehicles ever recording a dangerous defect, which is reassuringly low for a high-performance car. The petrol engine achieves a 91.7% pass rate, indicating consistent reliability across the sample.

At a median mileage of 28,407 miles for a car of this age, these RS 4s are running relatively lightly, which partly explains the excellent MOT results; when failures do occur, they're rare (0.19 per vehicle on average), though advisories are fairly common at 1.1 per vehicle. If you're considering one, check the service history carefully and budget for the inevitable wear advisories on suspension and brakes—but the numbers suggest you're buying into a mechanically sound car if it's been looked after.

We have limited data for the 2021 Audi RS 4 Carbon Black TFSI Quat A — treat the figures below as indicative rather than definitive.

⚠️ Around 1 in 20 of these vehicles have had a dangerous MOT failure at some point — usually tyres or brakes, and often a one-off issue rather than a persistent problem. The group stats won't tell you which one you're looking at.

First-time pass

94%

UK average ~80%

Better than average

Dangerous (ever)

6.4%

At least once in MOT history

Check this vehicle

Avg failures / car

0.19

Over 2.2 tests on record

Low

Typical mileage

28k

Middle half: 22k–38k

For context

These stats describe 252 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.

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Spot recurring advisories, hidden issues, and how it compares to 252 Audi RS 4 Carbon Black TFSI Quat A cars.

Before you buy a 2021 Audi RS 4 Carbon Black TFSI Quat A

Based on MOT data from 252 vehicles — here's what to check.

📋 Check the full MOT history. 6.4% of these vehicles have had a dangerous defect recorded - recurring advisories often signal problems years before they become failures.
Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle.
🔍 Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price. Inspection →
📄 Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically. History Get 20% off via CarHunch

Pass Rate by Fuel Type

Fuel type	Vehicles	Pass rate	Avg failures
Petrol (99%)	250	94%	0.19

Colour Breakdown

Based on 1,222 Audi RS 4 Carbon Black TFSI Quat A vehicles registered in the UK — across all years. From DVLA registration records.

Grey 48.3%

590

Black 28.7%

351

Blue 12.8%

156

White 3.8%

Green 3.4%

Red 2.4%

Purple 0.6%

Mileage Distribution

Most 2021 Audi RS 4 Carbon Black TFSI Quat A vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.

28,407

typical

21,504

low mileage

37,831

high mileage

Half of all 2021 Audi RS 4 Carbon Black TFSI Quat A vehicles fall between 21,504 and 37,831 miles.

Is the mileage you're seeing normal?

✓ Under 21,504 miles — lower than most. Could be great, or could be a vehicle that rarely moved. Check test frequency and mileage progression in the MOT history.

✓ 21,504–37,831 miles — normal for age. This is where most 2021 Audi RS 4 Carbon Black TFSI Quat As sit.

⚠ Over 51,071 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

MOT History Averages

2.2

Avg MOT tests per vehicle

0.19

Avg failures per vehicle

1.1

Avg advisories per vehicle

Other model years — Audi RS 4 Carbon Black TFSI Quat A: All RS 4 Carbon Black TFSI Quat A years → Which year to buy? →

2020 2022 2023 2024

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