Should I check the MOT history before buying a 2021 Mazda Cx 30 GT Sport MHEV 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 Mazda Cx 30 GT Sport MHEV 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 Mazda Cx 30 GT Sport MHEV 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 Mazda Cx 30 GT Sport MHEV Auto reliable?

Based on MOT data from 515 vehicles, the 2021 Mazda Cx 30 GT Sport MHEV Auto has a first-time MOT pass rate of 95.5%, 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 Cx 30 GT Sport MHEV 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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Mazda Cx 30 GT Sport MHEV Auto (2021)

515 real MOT outcomes analysed • 95.5% first-time pass rate

2021 Mazda Cx 30 GT Sport MHEV Auto

CarHunch analysed 515 real MOT records for the 2021 Mazda Cx 30 GT Sport MHEV 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 MOT Averages Colour Breakdown Compare Models

The 2021 Mazda CX-30 GT Sport MHEV Auto is a genuinely reliable proposition, with a first-time MOT pass rate of 94.9%—significantly ahead of the UK average of 80%. Only 4.1% of vehicles have ever recorded a dangerous defect, which is reassuringly low and suggests the model has no systemic safety issues.

At a median mileage of 23,789 miles for a three-year-old car, these are typical examples of normal use, and the low average failure rate of 0.14 per vehicle confirms they're holding up well mechanically. When you do take one for an MOT, expect around 1.7 advisories (minor wear items like wipers or fluid top-ups rather than real problems)—so budget for small maintenance but not major repairs.

The 2021 Mazda Cx 30 GT Sport MHEV Auto passes its MOT first time more often than most UK vehicles (95.5% vs ~80% average) — and when it does fail, it's usually something minor and cheap to fix.

First-time pass

95.5%

UK average ~80%

Better than average

Dangerous (ever)

4.1%

At least once in MOT history

Check this vehicle

Avg failures / car

0.14

Over 2.2 tests on record

Low

Typical mileage

24k

Middle half: 17k–32k

For context

✅ Good baseline reliability. A 95.5% 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 1.7 advisories per vehicle tells you wear items (tyres, brakes) get flagged regularly. Budget for them — they're not surprises.

These stats describe 515 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 515 Mazda Cx 30 GT Sport MHEV Auto cars.

Before you buy a 2021 Mazda Cx 30 GT Sport MHEV Auto

Based on MOT data from 515 vehicles — here's what to check.

📋 Check the full MOT history. 4.1% 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%)	505	95.4%	0.15

Colour Breakdown

Based on 1,735 Mazda Cx 30 GT Sport MHEV Auto vehicles registered in the UK — across all years. From DVLA registration records.

Grey 32.3%

561

Red 30.1%

522

Blue 15.8%

274

Black 9.1%

158

White 6.6%

114

Silver 6.1%

106

Mileage Distribution

Most 2021 Mazda Cx 30 GT Sport MHEV 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.

23,789

typical

16,746

low mileage

31,506

high mileage

Half of all 2021 Mazda Cx 30 GT Sport MHEV Auto vehicles fall between 16,746 and 31,506 miles.

Is the mileage you're seeing normal?

✓ Under 16,746 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.

✓ 16,746–31,506 miles — normal for age. This is where most 2021 Mazda Cx 30 GT Sport MHEV Autos sit.

⚠ Over 42,533 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

0.14

Avg failures per vehicle

1.7

Avg advisories per vehicle

Other model years — Mazda Cx 30 GT Sport MHEV Auto: All Cx 30 GT Sport MHEV Auto years → Which year to buy? →

2020 2022 2023

Or browse all models: Mazda →

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See how the 2021 Mazda Cx 30 GT Sport MHEV Auto stacks up against a rival.

A solid choice — agree?