Should I check the MOT history before buying a 2018 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 2018 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 2018 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 2018 Kia Stonic reliable?

Based on MOT data from 6,789 vehicles, the 2018 Kia Stonic has a first-time MOT pass rate of 90.7%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

What are common problems with the 2018 Kia Stonic?

The most frequently recorded MOT issues on the 2018 Kia Stonic are: Nearside Front Tyre worn close to legal limit/worn on edge (38.9% of vehicles), Offside Front Tyre worn close to legal limit/worn on edge (36.7% of vehicles), Front Brake pad(s) wearing thin (32.6% 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 2018 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.

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Kia Stonic (2018)

6,789 real MOT outcomes analysed • 90.7% first-time pass rate

2018 Kia Stonic

CarHunch analysed 6,789 real MOT records for the 2018 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? →

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AI Analysis Reliability Overview Common Issues Check a Specific Reg Petrol vs Diesel Buyer's Checklist Pass Rate by Fuel Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

The 2018 Kia Stonic is a notably reliable choice, with a 90.7% first-time pass rate that beats the UK average of 80% by a clear margin. Petrol versions edge out diesels slightly (91.2% vs 89.1%), and while the 18.7% dangerous defect rate sits just under the concern threshold, it's worth factoring into your decision if buying used.

These cars are running relatively light at 31,600 miles median for their age, suggesting they're generally well looked after. The average of 0.61 failures and 4.5 advisories per test indicates minor wear items are the main culprit rather than structural problems—when shopping, get a full pre-purchase inspection to check brake wear and suspension condition, which typically dominate the advisory list.

The 2018 Kia Stonic passes its MOT first time at roughly the UK average rate (90.7%) — solid but worth checking this vehicle's history carefully.

⚠️ Around 1 in 8 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

90.7%

UK average ~80%

Better than average

Dangerous (ever)

18.7%

At least once in MOT history

Check this vehicle

Avg failures / car

0.61

Over 5.7 tests on record

Moderate

Typical mileage

32k

Middle half: 24k–41k

For context

✅ Good baseline reliability. A 90.7% 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 4.5 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 6,789 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.

Average reliability — agree?

What tends to go wrong

Across 6,789 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 38.9%

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 32.6%

Front Brake pad(s) wearing thin · Rear Brake pad(s) wearing thin · Offside Rear 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 12.7%

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

Data covers a 3-year window centred on 2018.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 6,789 Kia Stonic cars.

Petrol vs Diesel

Pass rate difference of 2 percentage points — worth knowing if you're choosing between the two.

91.2%

Petrol

5,232 vehicles

89.2%

Diesel

1,557 vehicles

Before you buy a 2018 Kia Stonic

Based on MOT data from 6,789 vehicles — here's what to check.

📋 Check the full MOT history. 18.7% 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 (77%)	5,232	91.2%	0.58
Diesel (23%)	1,557	89.2%	0.72

Colour Breakdown

Based on 18,920 Kia Stonic vehicles registered in the UK — across all years. From DVLA registration records.

Grey 29.4%

5,560

White 25.3%

4,787

Red 22%

4,167

Black 16.1%

3,043

Yellow 5.4%

1,017

Brown 1%

182

Silver 0.8%

154

Blue 0.1%

Mileage Distribution

Most 2018 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.

31,603

typical

23,734

low mileage

40,859

high mileage

Half of all 2018 Kia Stonic vehicles fall between 23,734 and 40,859 miles.

Is the mileage you're seeing normal?

✓ Under 23,734 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.

✓ 23,734–40,859 miles — normal for age. This is where most 2018 Kia Stonics sit.

⚠ Over 55,159 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2018 Kia Stonic — Still on the Road

Almost all 2018 Kia Stonics are still on the road.

Strong survival — 6,572 vehicles still getting MOTs in 2025, 99% of the peak.

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2021–2025.

MOT History Averages

5.7

Avg MOT tests per vehicle

0.61

Avg failures per vehicle

4.5

Avg advisories per vehicle

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

2017 2019 2020 2021

Or browse all models: Kia →

Compare with another model

See how the 2018 Kia Stonic stacks up against a rival.

Average reliability — agree?