Should I check the MOT history before buying a 2021 Audi A4 A Road Spt 40tdi MHEV Qt SA?

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 A4 A Road Spt 40tdi MHEV Qt SA?

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 A4 A Road Spt 40tdi MHEV Qt SA?

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 A4 A Road Spt 40tdi MHEV Qt SA reliable?

Based on MOT data from 164 vehicles, the 2021 Audi A4 A Road Spt 40tdi MHEV Qt SA has a first-time MOT pass rate of 94.4%, 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 A4 A Road Spt 40tdi MHEV Qt SA?

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 A4 A Road Spt 40tdi MHEV Qt SA (2021)

164 real MOT outcomes analysed • 94.4% first-time pass rate

2021 Audi A4 A Road Spt 40tdi MHEV Qt SA

CarHunch analysed 164 real MOT records for the 2021 Audi A4 A Road Spt 40tdi MHEV Qt SA. 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 Compare Models

This 2021 Audi A4 is a strong performer, passing its MOT first time in 93.9% of cases—well ahead of the 80% UK average—with only 4.9% of vehicles ever flagged for dangerous defects, keeping safety concerns minimal. The diesel engine proves reliable in this application, matching the overall pass rate at 93.8%.

At just over 41,000 miles on average, these cars are still relatively young and lightly used, which explains the low failure rate of 0.18 per vehicle. Most owners encounter only minor advisories (1.2 per vehicle on average), suggesting that routine maintenance rather than major repairs is the typical ask—so budget for regular servicing and stay on top of the diesel particulate filter if you're buying one used.

We have limited data for the 2021 Audi A4 A Road Spt 40tdi MHEV Qt SA — treat the figures below as indicative rather than definitive.

First-time pass

94.4%

UK average ~80%

Better than average

Dangerous (ever)

4.9%

At least once in MOT history

Check this vehicle

Avg failures / car

0.18

Over 2.3 tests on record

Low

Typical mileage

39k

Middle half: 29k–48k

For context

These stats describe 164 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 164 Audi A4 A Road Spt 40tdi MHEV Qt SA cars.

Before you buy a 2021 Audi A4 A Road Spt 40tdi MHEV Qt SA

Based on MOT data from 164 vehicles — here's what to check.

📋 Check the full MOT history. 4.9% 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
Diesel (99%)	162	94.4%	0.19

Mileage Distribution

Most 2021 Audi A4 A Road Spt 40tdi MHEV Qt SA 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.

38,704

typical

29,093

low mileage

48,464

high mileage

Half of all 2021 Audi A4 A Road Spt 40tdi MHEV Qt SA vehicles fall between 29,093 and 48,464 miles.

Is the mileage you're seeing normal?

✓ Under 29,093 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.

✓ 29,093–48,464 miles — normal for age. This is where most 2021 Audi A4 A Road Spt 40tdi MHEV Qt SAs sit.

⚠ Over 65,426 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

0.18

Avg failures per vehicle

1.2

Avg advisories per vehicle

Compare with another model

See how the 2021 Audi A4 A Road Spt 40tdi MHEV Qt SA stacks up against a rival.

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