Should I check the MOT history before buying a 2020 Audi S4 Black Edition TDI Quattro 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 2020 Audi S4 Black Edition TDI Quattro 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 2020 Audi S4 Black Edition TDI Quattro 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 2020 Audi S4 Black Edition TDI Quattro A reliable?

Based on MOT data from 506 vehicles, the 2020 Audi S4 Black Edition TDI Quattro 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 2020 Audi S4 Black Edition TDI Quattro 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 S4 Black Edition TDI Quattro A (2020)

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

2020 Audi S4 Black Edition TDI Quattro A

CarHunch analysed 506 real MOT records for the 2020 Audi S4 Black Edition TDI Quattro 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 Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

The 2020 Audi S4 Black Edition TDI Quattro passes its first MOT 90.2% of the time, well above the UK average of 80%, signalling solid build quality and owner maintenance discipline. Only 9.1% have ever recorded a dangerous defect, which is reassuringly low for a performance diesel.

At just under 40,000 miles median, these cars are relatively low-mileage for their age, suggesting they're either cherished weekend drivers or careful commuters. The average of 0.25 failures per vehicle combined with 2.1 advisories indicates minor wear items are starting to emerge, so budget for the occasional service item—a pre-purchase inspection focusing on suspension and emissions equipment would be money well spent.

The 2020 Audi S4 Black Edition TDI Quattro A passes its MOT first time more often than most UK vehicles (94% vs ~80% average) — and when it does fail, it's usually something minor and cheap to fix.

⚠️ About 1 in 12 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)

9.1%

At least once in MOT history

Check this vehicle

Avg failures / car

0.25

Over 3.2 tests on record

Low

Typical mileage

40k

Middle half: 30k–50k

For context

✅ Good baseline reliability. A 94% first-time pass rate puts this well above the UK average — it's a well-sorted vehicle in this age bracket.

🔧 Expect consumable spend. An average of 2.1 advisories per vehicle tells you wear items (tyres, brakes) get flagged regularly. Budget for them — they're not surprises.

🔍 The dangerous defect figure is real. Most are one-off tyre failures or brake issues — not structural problems. But it's exactly why checking the individual vehicle's history is essential, not optional.

These stats describe 506 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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See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 506 Audi S4 Black Edition TDI Quattro A cars.

Before you buy a 2020 Audi S4 Black Edition TDI Quattro A

Based on MOT data from 506 vehicles — here's what to check.

📋 Check the full MOT history. 9.1% 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

Colour Breakdown

Based on 637 Audi S4 Black Edition TDI Quattro A vehicles registered in the UK — across all years. From DVLA registration records.

Grey 33.8%

215

Blue 26.1%

166

Black 21.4%

136

White 16.6%

106

Red 2.2%

Mileage Distribution

Most 2020 Audi S4 Black Edition TDI Quattro 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.

39,785

typical

29,871

low mileage

49,674

high mileage

Half of all 2020 Audi S4 Black Edition TDI Quattro A vehicles fall between 29,871 and 49,674 miles.

Is the mileage you're seeing normal?

✓ Under 29,871 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.

✓ 29,871–49,674 miles — normal for age. This is where most 2020 Audi S4 Black Edition TDI Quattro As sit.

⚠ Over 67,059 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2020 Audi S4 Black Edition TDI Quattro A — Still on the Road

Almost all 2020 Audi S4 Black Edition TDI Quattro As are still on the road.

Strong survival — 449 vehicles still getting MOTs in 2025, 96% of the peak.

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2022–2025.

MOT History Averages

3.2

Avg MOT tests per vehicle

0.25

Avg failures per vehicle

2.1

Avg advisories per vehicle

Other model years — Audi S4 Black Edition TDI Quattro A: All S4 Black Edition TDI Quattro A years → Which year to buy? →

2019

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