Should I check the MOT history before buying a 2021 Citroen C4 Cactus?

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 Citroen C4 Cactus?

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 Citroen C4 Cactus?

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 Citroen C4 Cactus reliable?

Based on MOT data from 310 vehicles, the 2021 Citroen C4 Cactus has a first-time MOT pass rate of 91.6%, 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 Citroen C4 Cactus?

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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Citroen C4 Cactus (2021)

310 real MOT outcomes analysed • 91.6% first-time pass rate

2021 Citroen C4 Cactus

CarHunch analysed 310 real MOT records for the 2021 Citroen C4 Cactus. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
Which year to buy? →

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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

Moderate sample. 310 vehicles on record. Figures are indicative — the specific vehicle's history matters more than these averages.

The 2021 Citroën C4 Cactus is a strong performer, with a first-time MOT pass rate of 91.6% well above the UK average of 80%. Dangerous defects are uncommon at 7.1%, so safety concerns are minimal for this cohort.

At just over 28,000 miles median mileage, these cars are still relatively young and low-mileage, which explains the healthy pass rate and why the average vehicle has picked up only 0.28 failures but 1.8 advisories—mostly minor wear items rather than serious faults. If you're buying one, get a pre-purchase inspection to catch those advisories early, but overall this generation is proving reliable in real-world use.

The 2021 Citroen C4 Cactus passes its MOT first time more often than most UK vehicles (91.6% 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

91.6%

UK average ~80%

Better than average

Dangerous (ever)

7.1%

At least once in MOT history

Check this vehicle

Avg failures / car

0.28

Over 2.5 tests on record

Low

Typical mileage

28k

Middle half: 20k–42k

For context

✅ Good baseline reliability. A 91.6% 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 1.8 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 310 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 310 Citroen C4 Cactus cars.

Before you buy a 2021 Citroen C4 Cactus

Based on MOT data from 310 vehicles — here's what to check.

📋 Check the full MOT history. 7.1% 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 (92%)	284	91.3%	0.29

Colour Breakdown

Based on 21,347 Citroen C4 Cactus vehicles registered in the UK — across all years. From DVLA registration records.

Grey 27.8%

5,945

Black 22.5%

4,793

White 14.7%

3,132

Blue 11.5%

2,458

Purple 8%

1,712

Silver 7.6%

1,620

Red 6.4%

1,357

Yellow 1.5%

315

Turquoise 0%

Green 0%

Mileage Distribution

Most 2021 Citroen C4 Cactus 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.

28,133

typical

19,835

low mileage

41,995

high mileage

Half of all 2021 Citroen C4 Cactus vehicles fall between 19,835 and 41,995 miles.

Is the mileage you're seeing normal?

✓ Under 19,835 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.

✓ 19,835–41,995 miles — normal for age. This is where most 2021 Citroen C4 Cactuss sit.

⚠ Over 56,693 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2021 Citroen C4 Cactus — Still on the Road

Almost all 2021 Citroen C4 Cactuss are still on the road.

Strong survival — 305 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

2.5

Avg MOT tests per vehicle

0.28

Avg failures per vehicle

1.8

Avg advisories per vehicle

Other model years — Citroen C4 Cactus: All C4 Cactus years → Which year to buy? →

2015 2016 2017 2018 2019 2020

Or browse all models: Citroen →

Compare with another model

See how the 2021 Citroen C4 Cactus stacks up against a rival.

A solid choice — agree?