Should I check the MOT history before buying a 2021 Audi Q4 E Tron S Line Launch Ed 40?

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 Q4 E Tron S Line Launch Ed 40?

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 Q4 E Tron S Line Launch Ed 40?

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 Q4 E Tron S Line Launch Ed 40 reliable?

Based on MOT data from 478 vehicles, the 2021 Audi Q4 E Tron S Line Launch Ed 40 has a first-time MOT pass rate of 92.1%, 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 Q4 E Tron S Line Launch Ed 40?

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.

CarHunch

Get Started

Audi Q4 E Tron S Line Launch Ed 40 (2021)

478 real MOT outcomes analysed • 92.1% first-time pass rate

2021 Audi Q4 E Tron S Line Launch Ed 40

CarHunch analysed 478 real MOT records for the 2021 Audi Q4 E Tron S Line Launch Ed 40. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
Which year to buy? →

On this page

AI Analysis Reliability Overview Check a Specific Reg Buyer's Checklist Mileage Distribution MOT Averages Colour Breakdown Compare Models

Moderate sample. 478 vehicles on record. Figures are indicative — the specific vehicle's history matters more than these averages.

This 2021 Q4 e-tron is notably reliable, with a 90.3% first-time pass rate that sits 10 percentage points above the UK average—a strong result that reflects Audi's build quality and the simplicity of electric powertrains. The dangerous defect rate of 12.8% is well below the concerning threshold, so structural and safety issues aren't a material risk.

At 32,312 miles median, these cars are running well below the mileage you'd expect for a three-year-old vehicle, which partly explains the clean MOT picture. The real insight is in the fine detail: only 0.23 failures per vehicle but 1.4 advisories each suggest minor wear items (likely brake dust, trim gaps, or sensor warnings) rather than serious faults—typical of newer EVs that still have all their original components. Before buying one, verify the battery health certificate and confirm the service history is stamped, since electric cars mask mechanical problems more easily than combustion engines.

The 2021 Audi Q4 E Tron S Line Launch Ed 40 passes its MOT first time more often than most UK vehicles (92.1% vs ~80% average) — and when it does fail, it's usually something minor and cheap to fix.

⚠️ Around 1 in 8 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

92.1%

UK average ~80%

Better than average

Dangerous (ever)

12.8%

At least once in MOT history

Check this vehicle

Avg failures / car

0.23

Over 2.2 tests on record

Low

Typical mileage

32k

Middle half: 24k–43k

For context

✅ Good baseline reliability. A 92.1% first-time pass rate puts this well above the UK average — it's a well-sorted vehicle in this age bracket.

🔍 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 478 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.

A solid choice — agree?

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 478 Audi Q4 E Tron S Line Launch Ed 40 cars.

Before you buy a 2021 Audi Q4 E Tron S Line Launch Ed 40

Based on MOT data from 478 vehicles — here's what to check.

📋 Check the full MOT history. 12.8% 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 479 Audi Q4 E Tron S Line Launch Ed 40 vehicles registered in the UK — across all years. From DVLA registration records.

Black 27.3%

131

Grey 23%

110

Blue 21.7%

104

Silver 15%

White 12.9%

Mileage Distribution

Most 2021 Audi Q4 E Tron S Line Launch Ed 40 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.

32,312

typical

23,872

low mileage

42,541

high mileage

Half of all 2021 Audi Q4 E Tron S Line Launch Ed 40 vehicles fall between 23,872 and 42,541 miles.

Is the mileage you're seeing normal?

✓ Under 23,872 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.

✓ 23,872–42,541 miles — normal for age. This is where most 2021 Audi Q4 E Tron S Line Launch Ed 40s sit.

⚠ Over 57,430 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

0.23

Avg failures per vehicle

1.4

Avg advisories per vehicle

Compare with another model

See how the 2021 Audi Q4 E Tron S Line Launch Ed 40 stacks up against a rival.

A solid choice — agree?