2018 Kia Stonic MOT pass rate, common failures & what to check

In 2025, 85.3% of Kia Stonics first used in 2018 passed their MOT first time, against 80.9% for all cars first used in 2018. Across 20,517 Stonic first tests from 2023 to 2025, the most common failure areas were brakes, visibility (wipers, washers and windscreen) and tyres.

This page analyses first MOT tests for Kia Stonics first used in 2018 (all trims grouped): 2021 to 2025 for the pass-rate trend, and 2023 to 2025 for the failure and advisory analysis — plus what is worth checking before you buy one.

Data: DVSA anonymised MOT tests to December 2025 · Calculated by SortedCars · Updated October 2026

Passed first time, 2025
85.3%
of 6,801 first tests; all cars first used in 2018: 80.9%. Fixed-at-the-test counts as a fail
Tests analysed
20,517
first tests, 2023–2025; 6,801 in 2025
Clean pass, 2025
49.8%
of 6,801 first tests in 2025, passed with no advisory and no minor defect recorded
Typical mileage, tested in 2025
47,500
middle half: 35,500–61,000 miles; all cars first used in 2018: 52,000

How the 2018 Kia Stonic MOT pass rate has changed

Share of first tests passed in each year, Stonics first used in 2018 against all cars first used in 2018 (any make or fuel; not adjusted for mileage, fuel or use). In 2025 the Stonic figure was 4.4 points higher.

2018 StonicAll cars first used in 2018
80%90%100%20212022202320242025Test year (first tests)All cars first used in 2018, test year 2021: 87.6%All cars first used in 2018, test year 2022: 86.3%All cars first used in 2018, test year 2023: 84.2%All cars first used in 2018, test year 2024: 82.5%All cars first used in 2018, test year 2025: 80.9%2018 Stonic, test year 2021: 93.2%2018 Stonic, test year 2022: 88.6%2018 Stonic, test year 2023: 86.8%2018 Stonic, test year 2024: 85.7%2018 Stonic, test year 2025: 85.3%85.3%80.9%
View this chart as a table
Test year2018 StonicAll cars first used 2018Stonic first tests
202193.2%87.6%6,963
202288.6%86.3%6,881
202386.8%84.2%6,866
202485.7%82.5%6,850
202585.3%80.9%6,801

Common 2018 Kia Stonic MOT failures

Share of the 2,882 failed first tests (2023–2025) with at least one failure in each area. A test can fail in more than one area, so the shares add up to more than 100%.

Brakes31.0%
Visibility28.4%
Tyres24.6%
Lamps, reflectors and electrical equipment18.0%
Suspension6.5%
Noise, emissions and leaks5.8%
Steering2.2%

Most common failure items

DVSA failure itemShare of failed first testsTests
Brake pads: less than 1.5 mm thick20.7%596
Wipers: does not clear the windscreen effectively19.0%549
Tread depth: below requirements of 1.6mm13.3%384
Headlamp: not working on dipped beam6.6%191
Tyre condition: has a cut in excess of the requirements deep enough to reach the ply or cords5.7%165

Item names are DVSA’s own wording. 2023–2025 combined.

What to check on a 2018 Kia Stonic before buying

The three areas where failed first tests most often had a fault, 2023–2025.

  1. Brakes. Worth looking at the discs and pads through the wheel spokes for scoring and a worn lip, and noticing on the test drive whether the car pulls to one side or the pedal feels long.
  2. Wipers and windscreen. Worth checking that the wipers clear the screen cleanly, that the washers work, and that there are no chips or cracks in the driver’s view.
  3. Tyres. Worth checking the tread depth across the whole width of each tyre, and the sidewalls for cuts, cracks and bulges.

Common 2018 Kia Stonic MOT advisories

Advisories are points the tester noted that did not fail the car. Most common on 2018 Stonics, as a share of all 20,517 first tests, 2023–2025.

DVSA advisory itemShare of first testsTests
Tread depth: worn close to legal limit/worn on edge15.3%3,147
Brake pads: wearing thin13.0%2,661
Brake discs: worn, pitted or scored, but not seriously weakened8.5%1,737
Tyre condition: slightly damaged/cracking or perishing5.9%1,208
Brake discs: worn, but not excessively3.6%736

Questions about the 2018 Kia Stonic MOT

What is the MOT pass rate of a 2018 Kia Stonic?

In 2025, 85.3% of Stonics first used in 2018 passed their MOT first time, against 80.9% for all cars first used in 2018. A car fixed during the test counts as a fail.

What does a 2018 Stonic most often fail its MOT on?

Brakes (in 31.0% of failed first tests, 2023–2025), visibility (wipers, washers and windscreen) (28.4%) and tyres (24.6%). The single most common item was “Brake pads: less than 1.5 mm thick” (20.7%).

How often does a 2018 Kia Stonic fail its MOT?

In 2025, 14.7% of first tests on Stonics first used in 2018 did not pass first time: 11.9% failed, and a further 2.8% had a fault fixed during the test (counted as a fail here). Across 2023–2025, 2,882 of 20,517 first tests did not pass first time.

What are the most common 2018 Kia Stonic MOT advisories?

“Tread depth: worn close to legal limit/worn on edge” (on 15.3% of first tests, 2023–2025), “Brake pads: wearing thin” (13.0%), “Brake discs: worn, pitted or scored, but not seriously weakened” (8.5%), “Tyre condition: slightly damaged/cracking or perishing” (5.9%) and “Brake discs: worn, but not excessively” (3.6%).

Is a 2018 Kia Stonic reliable?

An MOT pass rate shows what failed at the test, not how reliable a car is. For this group of cars the first-time pass rate went from 93.2% in 2021 to 85.3% in 2025. For one particular car, its own MOT history matters more than the average.

Other cars first used in 2018

The most-tested cars from the same year. Each page uses the same method.

2018 Ford Fiesta MOT statistics · 2018 Volkswagen Golf MOT statistics · 2018 Vauxhall Corsa MOT statistics · 2018 Ford Focus MOT statistics · 2018 Nissan Qashqai MOT statistics

How the 2018 Kia Stonic MOT data is calculated

Every number on this page is calculated by SortedCars from DVSA’s anonymised MOT test data for Great Britain, 2021–2025. “2018 Stonic” means a Kia Stonic whose date of first use falls in 2018 (67, 18 and 68 plates), all trims grouped. Class 4 vehicles, first tests only — retests are not counted. Pass rate = passed ÷ all first tests; a car with a fault fixed during the test (PRS) counts as a fail. Our national first-test pass rate matches DVSA’s published figure (table DVSA/MOT/01) to within 0.04 points in every year. Clean pass = passed with no advisory and no minor defect recorded. Mileage is the reading recorded at the test. Comparisons are with all cars first used in 2018, any make or fuel, and are not adjusted for mileage, fuel or use. Failure and advisory item names are DVSA’s own wording. No figure is shown for fewer than 500 tests; an item is shown only if it appears on at least 50 tests and 1% of the base. Pass rates describe a group of cars, not one car: a well-kept example can pass and a neglected one can fail. This page is general information, not advice about any particular vehicle; always have a used car inspected before you buy. SortedCars is not affiliated with or endorsed by DVSA. You can check any car’s MOT history free on the official service: gov.uk/check-mot-history. Contains public sector information licensed under the Open Government Licence v3.0.