Should I check the MOT history before buying a 2021 Mazda 6 Sport?

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 Mazda 6 Sport?

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 Mazda 6 Sport?

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 Mazda 6 Sport reliable?

Based on MOT data from 253 vehicles, the 2021 Mazda 6 Sport has a first-time MOT pass rate of 94.2%, 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 Mazda 6 Sport?

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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Mazda 6 Sport (2021)

253 real MOT outcomes analysed • 94.2% first-time pass rate

2021 Mazda 6 Sport

CarHunch analysed 253 real MOT records for the 2021 Mazda 6 Sport. 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

The 2021 Mazda 6 Sport is a standout performer, with a first-time MOT pass rate of 93.8%—well above the UK average of 80%—and only 5.9% of vehicles ever flagged for dangerous defects, which puts it in genuinely safe territory. This petrol-only cohort shows impressive consistency, with fewer than 0.2 failures per vehicle on average.

At a median mileage of 28,000 miles for three-year-old cars, these examples are running light, suggesting careful ownership and minimal wear-related issues. The low advisory count of 1.5 per vehicle confirms that when faults do emerge, they're typically minor; if you're shopping for one, a pre-purchase inspection will likely turn up nothing serious, but do still get it checked.

We have limited data for the 2021 Mazda 6 Sport — treat the figures below as indicative rather than definitive.

⚠️ 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

94.2%

UK average ~80%

Better than average

Dangerous (ever)

5.9%

At least once in MOT history

Check this vehicle

Avg failures / car

0.19

Over 2.2 tests on record

Low

Typical mileage

28k

Middle half: 20k–38k

For context

These stats describe 253 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 253 Mazda 6 Sport cars.

Before you buy a 2021 Mazda 6 Sport

Based on MOT data from 253 vehicles — here's what to check.

📋 Check the full MOT history. 5.9% 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
Petrol (98%)	249	94.1%	0.19

Colour Breakdown

Based on 791 Mazda 6 Sport vehicles registered in the UK — across all years. From DVLA registration records.

Grey 34.8%

275

Red 27.9%

221

Blue 19.2%

152

Black 11.8%

White 3.8%

Silver 2.5%

Mileage Distribution

Most 2021 Mazda 6 Sport 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.

27,980

typical

20,313

low mileage

37,989

high mileage

Half of all 2021 Mazda 6 Sport vehicles fall between 20,313 and 37,989 miles.

Is the mileage you're seeing normal?

✓ Under 20,313 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.

✓ 20,313–37,989 miles — normal for age. This is where most 2021 Mazda 6 Sports sit.

⚠ Over 51,285 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

0.19

Avg failures per vehicle

1.5

Avg advisories per vehicle

Other model years — Mazda 6 Sport: All 6 Sport years → Which year to buy? →

2022

Or browse all models: Mazda →

Compare with another model

See how the 2021 Mazda 6 Sport stacks up against a rival.

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