Should I check the MOT history before buying a 2021 Audi Q3 S Line 35 TFSI?

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 TFSI?

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 TFSI?

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 TFSI reliable?

Based on MOT data from 1,284 vehicles, the 2021 Audi Q3 S Line 35 TFSI has a first-time MOT pass rate of 94.6%, 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 TFSI?

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 TFSI (2021)

1,284 real MOT outcomes analysed • 94.6% first-time pass rate

2021 Audi Q3 S Line 35 TFSI

CarHunch analysed 1,284 real MOT records for the 2021 Audi Q3 S Line 35 TFSI. 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 Q3 S Line is a genuinely reliable prospect, passing its MOT first time in 94% of cases—well ahead of the UK average of 80%—with only 7.8% of vehicles ever flagged for dangerous defects, which is reassuringly low. The petrol engine shows consistent performance at a 93.8% pass rate, so fuel type isn't a deciding factor here.

At nearly 27,400 miles median for a three-year-old car, these vehicles are running well within typical usage patterns, and the 0.17 average failures per test confirms they're holding up mechanically. With 2.3 advisories per vehicle on average, you're looking at minor wear items rather than structural problems—when you're shopping, get a pre-purchase inspection to prioritize any brake or suspension advisories, but don't let the low failure rate scare you away.

The 2021 Audi Q3 S Line 35 TFSI passes its MOT first time more often than most UK vehicles (94.6% vs ~80% average) — and when it does fail, it's usually something minor and cheap to fix.

⚠️ 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

94.6%

UK average ~80%

Better than average

Dangerous (ever)

7.8%

At least once in MOT history

Check this vehicle

Avg failures / car

0.17

Over 2.3 tests on record

Low

Typical mileage

27k

Middle half: 20k–36k

For context

✅ Good baseline reliability. A 94.6% 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 2.3 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 1,284 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 1,284 Audi Q3 S Line 35 TFSI cars.

Before you buy a 2021 Audi Q3 S Line 35 TFSI

Based on MOT data from 1,284 vehicles — here's what to check.

📋 Check the full MOT history. 7.8% 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

Pass Rate by Fuel Type

Fuel type	Vehicles	Pass rate	Avg failures
Petrol (96%)	1,234	94.5%	0.18
Other (4%)	50	99%	0.02

Colour Breakdown

Based on 5,398 Audi Q3 S Line 35 TFSI vehicles registered in the UK — across all years. From DVLA registration records.

Grey 35.9%

1,940

Black 24.7%

1,331

White 20%

1,079

Blue 15.1%

815

Red 2.1%

112

Silver 1.6%

Orange 0.6%

Mileage Distribution

Most 2021 Audi Q3 S Line 35 TFSI 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.

27,368

typical

20,479

low mileage

35,521

high mileage

Half of all 2021 Audi Q3 S Line 35 TFSI vehicles fall between 20,479 and 35,521 miles.

Is the mileage you're seeing normal?

✓ Under 20,479 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.

✓ 20,479–35,521 miles — normal for age. This is where most 2021 Audi Q3 S Line 35 TFSIs sit.

⚠ Over 47,953 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

2.3

Avg MOT tests per vehicle

0.17

Avg failures per vehicle

2.3

Avg advisories per vehicle

Other model years — Audi Q3 S Line 35 TFSI: All Q3 S Line 35 TFSI years → Which year to buy? →

2019 2020 2022 2023 2024 2025

Or browse all models: Audi →

Compare with another model

See how the 2021 Audi Q3 S Line 35 TFSI stacks up against a rival.

A solid choice — agree?