Should I check the MOT history before buying a 2021 Mazda Cx 30 SE L Lux 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 SE L Lux 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 SE L Lux 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 SE L Lux MHEV Auto reliable?

Based on MOT data from 484 vehicles, the 2021 Mazda Cx 30 SE L Lux MHEV Auto has a first-time MOT pass rate of 94.8%, 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 SE L Lux 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 SE L Lux MHEV Auto (2021)

484 real MOT outcomes analysed • 94.8% first-time pass rate

2021 Mazda Cx 30 SE L Lux MHEV Auto

CarHunch analysed 484 real MOT records for the 2021 Mazda Cx 30 SE L Lux 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

Moderate sample. 484 vehicles on record. Figures are indicative — the specific vehicle's history matters more than these averages.

This 2021 Mazda CX-30 is a genuinely reliable used buy—its 94% first-time MOT pass rate sits comfortably 14 points above the UK average, and only 5.8% of these vehicles have ever recorded a dangerous defect, which is reassuring. The petrol variant maintains that same 93.9% pass rate across 459 vehicles analysed, suggesting consistency across the model lineup.

These cars are running at sensible mileage for their age, averaging just over 25,000 miles, and they rack up very few failures in the real world—only 0.17 per vehicle on average. Before buying, check the service history carefully and budget for minor advisory work like worn brake pads or fluid top-ups, since most vehicles do pick up around 1.6 advisories per MOT.

The 2021 Mazda Cx 30 SE L Lux MHEV Auto passes its MOT first time more often than most UK vehicles (94.8% vs ~80% average) — and when it does fail, it's usually something minor and cheap to fix.

⚠️ 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

94.8%

UK average ~80%

Better than average

Dangerous (ever)

5.8%

At least once in MOT history

Check this vehicle

Avg failures / car

0.17

Over 2.2 tests on record

Low

Typical mileage

22k

Middle half: 16k–32k

For context

✅ Good baseline reliability. A 94.8% 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 1.6 advisories per vehicle tells you wear items (tyres, brakes) get flagged regularly. Budget for them — they're not surprises.

🔍 The dangerous defect figure is real. Most are one-off tyre failures or brake issues — not structural problems. But it's exactly why checking the individual vehicle's history is essential, not optional.

These stats describe 484 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 484 Mazda Cx 30 SE L Lux MHEV Auto cars.

Before you buy a 2021 Mazda Cx 30 SE L Lux MHEV Auto

Based on MOT data from 484 vehicles — here's what to check.

📋 Check the full MOT history. 5.8% 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%)	459	94.7%	0.17

Colour Breakdown

Based on 1,531 Mazda Cx 30 SE L Lux MHEV Auto vehicles registered in the UK — across all years. From DVLA registration records.

Grey 28.7%

440

Red 26.3%

403

Blue 14.8%

226

White 12.8%

196

Black 9.6%

147

Silver 7.8%

119

Mileage Distribution

Most 2021 Mazda Cx 30 SE L Lux 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.

22,469

typical

15,769

low mileage

31,642

high mileage

Half of all 2021 Mazda Cx 30 SE L Lux MHEV Auto vehicles fall between 15,769 and 31,642 miles.

Is the mileage you're seeing normal?

✓ Under 15,769 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.

✓ 15,769–31,642 miles — normal for age. This is where most 2021 Mazda Cx 30 SE L Lux MHEV Autos sit.

⚠ Over 42,716 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

0.17

Avg failures per vehicle

1.6

Avg advisories per vehicle

Other model years — Mazda Cx 30 SE L Lux MHEV Auto: All Cx 30 SE L Lux MHEV Auto years → Which year to buy? →

2020 2022 2023

Or browse all models: Mazda →

Compare with another model

See how the 2021 Mazda Cx 30 SE L Lux MHEV Auto stacks up against a rival.

A solid choice — agree?