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Kia Stonic Gt-line S Isg MHEV Reliability, MOT Pass Rate & Common Faults

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Is the Kia Stonic Gt-line S Isg MHEV reliable? We analysed 4,089 real MOT tests across 2,187 vehicles to find out.

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Data last updated: · Based on 4,089 real MOT tests
MOT Pass Rate
93.4%
Typical Mileage
22,083mi
Annual Mileage
6,011mi/yr
Est. Lifespan
yrs

The Kia Stonic Gt-line S Isg MHEV is above average for reliability based on real UK MOT data. Here's everything you need to know before buying a used Kia Stonic Gt-line S Isg MHEV.

Kia Stonic Gt-line S Isg MHEV Number Plates

Number plates registered to a Kia Stonic Gt-line S Isg MHEV. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.

Kia Stonic Gt-line S Isg MHEV MOT Pass Rate by Year

How likely is a Kia Stonic Gt-line S Isg MHEV to pass its MOT? Here's the pass rate for each registration year, newest first.

92.4%
2023
94%
2022
93.2%
2021

Kia Stonic Gt-line S Isg MHEV Common Faults & Problems

These are the most common serious faults found on Kia Stonic Gt-line S Isg MHEV models during MOT testing — flagged as dangerous or major failures that need immediate attention.

Tyre tread depth below requirements of 1.6mm 35
Brake pad(s) less than 1.5 mm thick 9
Brake pad(s) less than 1.5 mm thick 9

Kia Stonic Gt-line S Isg MHEV Mileage — What's Normal?

How many miles does a typical Kia Stonic Gt-line S Isg MHEV owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.

Low usage
3,873 mi/yr
Typical
6,011 mi/yr
Average
6,826 mi/yr
Heavy usage
8,983 mi/yr

Kia Stonic Gt-line S Isg MHEV MOT Data by Registration Year

Full breakdown of pass rate and mileage for each year. Use this to compare the Kia Stonic Gt-line S Isg MHEV year you're looking at.

Year Tests Pass Rate Low Mi. Typical Mi. High Mi.
2023 422 92.4% 12,379 17,600 24,572
2022 1,293 94.0% 15,528 21,999 29,748
2021 2,242 93.2% 15,818 22,910 30,800

How Long Does a Kia Stonic Gt-line S Isg MHEV Last?

Based on 2,187 Kia Stonic Gt-line S Isg MHEV vehicles on UK roads.

Average
2.9 years
Median
3.0 years

Kia Stonic Gt-line S Isg MHEV Mileage Distribution

Total mileage recorded across all Kia Stonic Gt-line S Isg MHEV MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.

Median
22,083 mi
75th Percentile
30,220 mi
95th Percentile
46,341 mi
Max Recorded
95,751 mi

Best Year to Buy a Used Kia Stonic Gt-line S Isg MHEV

Based on MOT pass rates across all registration years with sufficient test data.

Best year
2022

94.0% MOT pass rate from 1,293 tests

Year to avoid
2023

92.4% MOT pass rate from 422 tests

The best year to buy a used Kia Stonic Gt-line S Isg MHEV is 2022, which has the highest MOT pass rate at 94.0% across 1,293 tests. The 2023 model year has the lowest pass rate at 92.4% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.

How Does the Kia Stonic Gt-line S Isg MHEV Compare?

MOT pass rates compared to similar models. Click any model for the full breakdown.

Model Pass Rate Tests Typical Mileage Lifespan
Kia Stonic Gt-line S Isg MHEV THIS CAR 93.4% 4,089 22,083 mi — yrs
Kia Sportage 80.4% 2,634,551 53,679 mi 26 yrs
Kia Picanto 77.1% 2,626,043 39,084 mi 22 yrs
Kia Ceed 76.1% 1,665,385 60,630 mi 19 yrs
Fiat 500 Sport 84.8% 2,118 25,948 mi — yrs

Compared to the Kia Sportage (80.4% pass rate) and the Kia Picanto (77.1% pass rate), the Kia Stonic Gt-line S Isg MHEV outperforms both on MOT reliability.

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Should you buy a used Kia Stonic Gt-line S Isg MHEV?

The Kia Stonic Gt-line S Isg MHEV has an overall MOT pass rate of 93.4% across 4,089 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.

On the safety side, the most frequently flagged dangerous fault is tyre tread depth below requirements of 1.6mm. Dangerous faults cause an immediate MOT failure and mean the vehicle is not roadworthy until repaired. If you're viewing a Kia Stonic Gt-line S Isg MHEV with an expired or recently passed MOT, ask the seller whether any dangerous faults were found and fixed during the last test.

A typical Kia Stonic Gt-line S Isg MHEV owner drives around 6,011 miles per year. If the car you're looking at is significantly above this, expect more wear on suspension, brakes and tyres. If it's well below, the vehicle may have been sitting unused — check for perished rubber, corroded discs and stale fluids.

Before committing to a purchase, we recommend running a full vehicle history check on the specific car. This will reveal any outstanding finance, stolen markers, write-off history and mileage discrepancies that the seller may not disclose — and that the MOT data alone can't tell you.

Kia Stonic Gt-line S Isg MHEV — Frequently Asked Questions

Is the Kia Stonic Gt-line S Isg MHEV reliable?
Based on 4,089 MOT tests, the Kia Stonic Gt-line S Isg MHEV has a 93.4% pass rate — above the UK average, suggesting good reliability.
What are the common problems on a Kia Stonic Gt-line S Isg MHEV?
The most common failure point is general wear and tear.
How many miles does a Kia Stonic Gt-line S Isg MHEV do per year?
The typical Kia Stonic Gt-line S Isg MHEV does around 6,011 miles per year. Anything significantly above or below this is worth investigating.
How long does a Kia Stonic Gt-line S Isg MHEV last?
Lifespan data is not yet available for this model.
Should I get a vehicle check before buying a Kia Stonic Gt-line S Isg MHEV?
Yes. An MOT pass rate tells you about the model in general, but a vehicle history check reveals the specific car's finance, stolen, write-off and mileage history — things the seller may not disclose.
What is the best year to buy a Kia Stonic Gt-line S Isg MHEV?
Based on MOT pass rates, the best year to buy a used Kia Stonic Gt-line S Isg MHEV is 2022 with a 94.0% pass rate across 1,293 tests.