Should I check the MOT history before buying a 2021 Kia Stonic?

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 Kia Stonic?

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 Kia Stonic?

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 Kia Stonic reliable?

Based on MOT data from 138 vehicles, the 2021 Kia Stonic has a first-time MOT pass rate of 91.4%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

What are common problems with the 2021 Kia Stonic?

The most frequently recorded MOT issues on the 2021 Kia Stonic are: Nearside Front Tyre worn close to legal limit/worn on edge (26.1% of vehicles), Offside Front Tyre worn close to legal limit/worn on edge (24.9% of vehicles), Front Brake pad(s) wearing thin (23.7% of vehicles). These figures are based on actual MOT test records — search a specific registration on CarHunch to see its individual history.

Do I need an HPI check when buying a 2021 Kia Stonic?

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.

CarHunch

Get Started

Kia Stonic (2021)

138 real MOT outcomes analysed • 91.4% first-time pass rate

2021 Kia Stonic

CarHunch analysed 138 real MOT records for the 2021 Kia Stonic. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
Which year to buy? →

On this page

AI Analysis Reliability Overview Common Issues Check a Specific Reg Buyer's Checklist Pass Rate by Fuel Mileage Distribution MOT Averages Compare Models

The 2021 Kia Stonic is a strong performer at MOT, with a first-time pass rate of 91.4% — well above the UK average of 80% — and only 5.8% of vehicles ever flagged for dangerous defects, which is reassuring for a buyer. The petrol version (making up the vast majority of the sample) maintains that strong 91.9% pass rate, so fuel type isn't a differentiator here.

These cars are running relatively light mileage for their age at around 23,500 miles on average, which partly explains the solid reliability picture, but even accounting for that, the low failure rate of 0.27 per vehicle suggests the Stonic is genuinely well-built. When advisories do crop up (averaging 1.1 per car), they're typically minor wear items rather than structural problems — so if you're buying one, a pre-purchase inspection should focus on confirming service history rather than hunting for hidden gremlins.

We have limited data for the 2021 Kia Stonic — 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

91.4%

UK average ~80%

Better than average

Dangerous (ever)

5.8%

At least once in MOT history

Check this vehicle

Avg failures / car

0.27

Over 2.4 tests on record

Low

Typical mileage

21k

Middle half: 15k–29k

For context

These stats describe 138 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.

A solid choice — agree?

What tends to go wrong

Across 138 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 26.1%

Nearside Front Tyre worn close to legal limit/worn on edge · Offside Front Tyre worn close to legal limit/worn on edge · Nearside Rear Tyre worn close to legal limit/worn on edge · …

Budget for a full set — on a vehicle this age, tyres are expected consumables. An inspection will confirm how much is left.

Brake wear 23.7%

Front Brake pad(s) wearing thin · Rear Brake pad(s) wearing thin · Front Brake disc worn, pitted or scored, but not seriously weakened · …

Ask the seller when brakes were last serviced. If they don't know, factor in the cost.

Other issues 8.2%

Nearside Rear Child Seat fitted not allowing full inspection of adult belt

Wipers & washers 4.8%

Offside Front Windscreen wiper does not clear the windscreen effectively

Data covers a 3-year window centred on 2021.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 138 Kia Stonic cars.

Before you buy a 2021 Kia Stonic

Based on MOT data from 138 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 (93%)	129	91.9%	0.26

Mileage Distribution

Most 2021 Kia Stonic 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.

20,808

typical

14,900

low mileage

28,530

high mileage

Half of all 2021 Kia Stonic vehicles fall between 14,900 and 28,530 miles.

Is the mileage you're seeing normal?

✓ Under 14,900 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.

✓ 14,900–28,530 miles — normal for age. This is where most 2021 Kia Stonics sit.

⚠ Over 38,515 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

2.4

Avg MOT tests per vehicle

0.27

Avg failures per vehicle

1.1

Avg advisories per vehicle

Other model years — Kia Stonic: All Stonic years → Which year to buy? →

2017 2018 2019 2020

Or browse all models: Kia →

Compare with another model

See how the 2021 Kia Stonic stacks up against a rival.

A solid choice — agree?