Should I check the MOT history before buying a 2021 Audi Q3 S Line 35 TDI Quattro S 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 Q3 S Line 35 TDI Quattro S 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 Q3 S Line 35 TDI Quattro S 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 Q3 S Line 35 TDI Quattro S A reliable?

Based on MOT data from 177 vehicles, the 2021 Audi Q3 S Line 35 TDI Quattro S A has a first-time MOT pass rate of 95%, 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 Q3 S Line 35 TDI Quattro S 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 Q3 S Line 35 TDI Quattro S A (2021)

177 real MOT outcomes analysed • 95% first-time pass rate

2021 Audi Q3 S Line 35 TDI Quattro S A

CarHunch analysed 177 real MOT records for the 2021 Audi Q3 S Line 35 TDI Quattro S 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 Compare Models

This 2021 Q3 S Line is significantly more reliable than the typical UK car, with a first-time MOT pass rate of 93.9% against the national average of 80%—a strong sign of build quality. Only 8.5% of these vehicles have ever recorded a dangerous defect, which is reassuringly low and shouldn't be a major buyer concern.

The median mileage of 31,787 miles is exactly what you'd expect for a three-year-old car, suggesting these aren't thrashed examples or high-milers. When failures do occur they're minor (averaging just 0.16 per vehicle), though the 2.1 advisories per car indicate some routine maintenance items cropping up—so budget for scheduled servicing but don't expect major surprises. Check the service history closely on any example you're considering, as this cohort's strong pass rate depends on regular upkeep.

We have limited data for the 2021 Audi Q3 S Line 35 TDI Quattro S A — treat the figures below as indicative rather than definitive.

⚠️ 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

95%

UK average ~80%

Better than average

Dangerous (ever)

8.5%

At least once in MOT history

Check this vehicle

Avg failures / car

0.16

Over 2.2 tests on record

Low

Typical mileage

32k

Middle half: 24k–41k

For context

These stats describe 177 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 177 Audi Q3 S Line 35 TDI Quattro S A cars.

Before you buy a 2021 Audi Q3 S Line 35 TDI Quattro S A

Based on MOT data from 177 vehicles — here's what to check.

📋 Check the full MOT history. 8.5% 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

Mileage Distribution

Most 2021 Audi Q3 S Line 35 TDI Quattro S 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.

31,787

typical

24,476

low mileage

41,114

high mileage

Half of all 2021 Audi Q3 S Line 35 TDI Quattro S A vehicles fall between 24,476 and 41,114 miles.

Is the mileage you're seeing normal?

✓ Under 24,476 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.

✓ 24,476–41,114 miles — normal for age. This is where most 2021 Audi Q3 S Line 35 TDI Quattro S As sit.

⚠ Over 55,503 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2021 Audi Q3 S Line 35 TDI Quattro S A — Still on the Road

Almost all 2021 Audi Q3 S Line 35 TDI Quattro S As are still on the road.

Strong survival — 173 vehicles still getting MOTs in 2025, 100% of the peak.

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2023–2025.

MOT History Averages

2.2

Avg MOT tests per vehicle

0.16

Avg failures per vehicle

2.1

Avg advisories per vehicle

Compare with another model

See how the 2021 Audi Q3 S Line 35 TDI Quattro S A stacks up against a rival.

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