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Kia Stonic Common Problems, Faults & Repair Costs (2026)

Based on official DVSA MOT test data. View the most common MOT failure categories, pass rates, and estimated repair costs for the Kia Stonic (2017–present).

MOT Pass Rate

85.5%3.5% above national avg (82%)

Reliability rating: Excellent — based on approx. 18,000 tests

Dangerous Defects

1.20%

Moderate risk

Retest Rate

10.2%

of failed tests need a retest

Top MOT Failure Categories

1

Lamps, reflectors and electrical equipment

Est. repair: £40–£200

13.0%
2

Suspension

Est. repair: £120–£450

11.5%
3

Brakes

Est. repair: £100–£350

10.0%
4

Tyres

Est. repair: £50–£120 per tyre

9.2%
5

Exhaust, fuel and emissions

Est. repair: £40–£200

6.2%

Where Faults Occur

29.0%

Front

26.0%

Rear

19.0%

Offside

Mileage Benchmarks

At 3 years

18,000 mi

At 5 years

30,000 mi

At 10 years

N/A

Significantly higher or lower mileage than these benchmarks may indicate unusual usage patterns. Check the full MOT history for mileage consistency.

Is a Kia Stonic a Good Buy?

The Kia Stonic demonstrates above-average reliability based on MOT test data, with a 85.5% pass rate. This places it 3.5% above the national average, suggesting lower ongoing maintenance costs compared to many competitors.

While no car is without faults, lamps, reflectors and electrical equipment issues are the most common concern, affecting approximately 13.0% of failed tests. These tend to be relatively affordable to fix at £30–£150.

Kia Stonic MOT Check & History

View detailed MOT pass rates by year, mileage benchmarks, and full test history data for the Kia Stonic.

View Kia Stonic MOT Data

Check a Specific Kia Stonic

Enter a registration number to view the full MOT history for any Kia Stonic.

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Other Kia Models

Kia Sportage

82.8%

Lamps, reflectors and electrical equipment →

Kia Ceed

81.5%

Lamps, reflectors and electrical equipment →

Kia Picanto

82.2%

Lamps, reflectors and electrical equipment →

Kia Rio

80.8%

Lamps, reflectors and electrical equipment →

Kia Niro

87.2%

Lamps, reflectors and electrical equipment →

Kia Sorento

80.5%

Lamps, reflectors and electrical equipment →

View all Kia models

Frequently Asked Questions

What are the most common MOT faults on a Kia Stonic?
The top MOT failure on the Kia Stonic is Lamps, reflectors and electrical equipment, accounting for approximately 13.0% of all failures. Other common issues include suspension and brakes.
What is the Kia Stonic MOT pass rate?
The Kia Stonic has an estimated MOT pass rate of 85.5%, which is 3.5% above the national average of 82%. This rates the Kia Stonic as "Excellent" for MOT reliability.
Is the Kia Stonic reliable?
Based on DVSA MOT data, the Kia Stonic has a excellent reliability record with a 85.5% pass rate. It has a dangerous defect rate of 1.20% and a retest rate of 10.2%.
How much does it cost to fix common Kia Stonic MOT failures?
Typical repair costs for Kia Stonic MOT failures range from £30–£200 for lamps, reflectors and electrical equipment issues to £120–£450 for suspension problems. Prices are estimates based on typical UK independent garage rates.
What mileage should a Kia Stonic have?
Based on MOT test data, the average Kia Stonic covers approximately 18,000 mi by 3 years, 30,000 mi by 5 years, and N/A by 10 years. Significantly higher or lower mileage may warrant closer inspection.
Should I buy a used Kia Stonic?
The Kia Stonic is generally a solid choice based on MOT data. Check the full MOT history of any specific vehicle before purchasing, paying particular attention to lamps, reflectors and electrical equipment issues and mileage consistency.
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