Should I check the MOT history before buying a 2021 BMW M3 Competition Auto?

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 BMW M3 Competition Auto?

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 BMW M3 Competition Auto?

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 BMW M3 Competition Auto reliable?

Based on MOT data from 555 vehicles, the 2021 BMW M3 Competition Auto has a first-time MOT pass rate of 95.9%, 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 BMW M3 Competition Auto?

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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BMW M3 Competition Auto (2021)

555 real MOT outcomes analysed • 95.9% first-time pass rate

2021 BMW M3 Competition Auto

CarHunch analysed 555 real MOT records for the 2021 BMW M3 Competition Auto. 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 Still on the Road MOT Averages Colour Breakdown Compare Models

The 2021 BMW M3 Competition is more reliable than average, with an 86.5% first-time pass rate that comfortably beats the UK average of 80%, and a low 4.7% rate of dangerous defects means serious mechanical issues are genuinely uncommon in this cohort. These cars are running at sensible mileage for their age—a median of 23,567 miles—which is encouraging given the M3's performance credentials, and the 0.11 average failures per vehicle suggests owners are maintaining them well. The 0.6 advisories per car (mostly minor wear items) and the petrol variant's consistent 86.2% pass rate point to a robust, well-engineered platform that responds positively to regular servicing. When you're evaluating one, prioritise a full service history and check the suspension components carefully, as high-performance cars demand precision maintenance to stay in this good condition.

The 2021 BMW M3 Competition Auto passes its MOT first time more often than most UK vehicles (95.9% vs ~80% average) — and when it does fail, it's usually something minor and cheap to fix.

First-time pass

95.9%

UK average ~80%

Better than average

Dangerous (ever)

4.7%

At least once in MOT history

Check this vehicle

Avg failures / car

0.11

Over 2 tests on record

Low

Typical mileage

24k

Middle half: 18k–31k

For context

✅ Good baseline reliability. A 95.9% first-time pass rate puts this well above the UK average — it's a well-sorted vehicle in this age bracket.

These stats describe 555 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 555 BMW M3 Competition Auto cars.

Before you buy a 2021 BMW M3 Competition Auto

Based on MOT data from 555 vehicles — here's what to check.

📋 Check the full MOT history. 4.7% 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 (95%)	526	96%	0.11

Colour Breakdown

Based on 842 BMW M3 Competition Auto vehicles registered in the UK — across all years. From DVLA registration records.

Grey 40.3%

339

Green 17.9%

151

Black 16%

135

Blue 11.8%

Red 6.1%

Yellow 4%

White 3.2%

Purple 0.7%

Mileage Distribution

Most 2021 BMW M3 Competition Auto 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.

23,567

typical

17,680

low mileage

30,903

high mileage

Half of all 2021 BMW M3 Competition Auto vehicles fall between 17,680 and 30,903 miles.

Is the mileage you're seeing normal?

✓ Under 17,680 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.

✓ 17,680–30,903 miles — normal for age. This is where most 2021 BMW M3 Competition Autos sit.

⚠ Over 41,719 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2021 BMW M3 Competition Auto — Still on the Road

Almost all 2021 BMW M3 Competition Autos are still on the road.

Strong survival — 476 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

Avg MOT tests per vehicle

0.11

Avg failures per vehicle

0.6

Avg advisories per vehicle

Other model years — BMW M3 Competition Auto: All M3 Competition Auto years → Which year to buy? →

2022

Or browse all models: BMW →

Compare with another model

See how the 2021 BMW M3 Competition Auto stacks up against a rival.

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