Should I check the MOT history before buying a 2021 Mazda Cx 30 GT Sport MHEV 4x4?

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 4x4?

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 4x4?

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 4x4 reliable?

Based on MOT data from 171 vehicles, the 2021 Mazda Cx 30 GT Sport MHEV 4x4 has a first-time MOT pass rate of 94%, 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 4x4?

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 4x4 (2021)

171 real MOT outcomes analysed • 94% first-time pass rate

2021 Mazda Cx 30 GT Sport MHEV 4x4

CarHunch analysed 171 real MOT records for the 2021 Mazda Cx 30 GT Sport MHEV 4x4. 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 Mazda CX-30 hybrid is significantly more reliable than average, with a 93.4% first-time MOT pass rate well above the UK's 80% benchmark. Only 5.3% have ever recorded a dangerous defect, which is reassuringly low and suggests buyers needn't worry about hidden structural or safety issues.

At 25,761 miles average, these vehicles are lightly used for their age, and the numbers confirm it: owners are averaging just 0.2 failures per test, with minor advisories (1.9 per vehicle) being the norm rather than serious faults. When shopping for one, have any pre-purchase inspection focus on the hybrid battery and electrical systems, since these account for most real-world running costs on this model.

We have limited data for the 2021 Mazda Cx 30 GT Sport MHEV 4x4 — 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%

UK average ~80%

Better than average

Dangerous (ever)

5.3%

At least once in MOT history

Check this vehicle

Avg failures / car

0.2

Over 2.3 tests on record

Low

Typical mileage

25k

Middle half: 18k–32k

For context

These stats describe 171 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 171 Mazda Cx 30 GT Sport MHEV 4x4 cars.

Before you buy a 2021 Mazda Cx 30 GT Sport MHEV 4x4

Based on MOT data from 171 vehicles — here's what to check.

📋 Check the full MOT history. 5.3% 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 (99%)	169	93.9%	0.2

Mileage Distribution

Most 2021 Mazda Cx 30 GT Sport MHEV 4x4 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.

24,749

typical

18,131

low mileage

31,899

high mileage

Half of all 2021 Mazda Cx 30 GT Sport MHEV 4x4 vehicles fall between 18,131 and 31,899 miles.

Is the mileage you're seeing normal?

✓ Under 18,131 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.

✓ 18,131–31,899 miles — normal for age. This is where most 2021 Mazda Cx 30 GT Sport MHEV 4x4s sit.

⚠ Over 43,063 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

0.2

Avg failures per vehicle

1.9

Avg advisories per vehicle

Other model years — Mazda Cx 30 GT Sport MHEV 4x4: All Cx 30 GT Sport MHEV 4x4 years → Which year to buy? →

2020

Or browse all models: Mazda →

Compare with another model

See how the 2021 Mazda Cx 30 GT Sport MHEV 4x4 stacks up against a rival.

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