KIA STONIC Common Problems & Reliability

Based on 505 MOT tests from 139 vehicles analysed by VehicleScore. The figures below describe that VehicleScore sample. Recurring issues seen in VehicleScore MOT data are not a claim that every KIA STONIC has the same fault.

KIA STONIC's have a amazing reliability rating of 930/999. The score was calculated from the average of every KIA STONIC that has had a registered MOT.

We calculated all of the below figures by getting the score from each vehicle make/model/year/fuel, which are each calculated a score. We then generate the average score, taking into account factors such as mileage and emissions.

Also check BHP & performance, road tax, fuel economy, and CO2 emissions for the KIA STONIC.

KIA STONIC (example)

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Fuel Type	Year	Reliability Score	Avg Mileage	Sample Size
N/A	N/A	930/999Outstanding	68,160 miles	2,245 vehicles

How reliable is the KIA STONIC?

Based on 505 MOT tests from 139 vehicles analysed by VehicleScore.

Vehicles

139

MOT tests

505

Pass rate

86.3%

Median mileage

42,411 mi

Recurring issues seen in VehicleScore MOT data are inspection findings from this sample. They are not a statement that every KIA STONIC has the same fault. The median VehicleScore in this sample is 910 out of 999.

Common KIA STONIC MOT problems

These groups combine equivalent MOT comments, such as the same tyre note on different corners. Counts are comment occurrences in the sample, not a percentage of cars.

Tyre wear

VehicleScore MOT data includes 88 advisory comments and 9 failure comments in this group. Seen as both an advisory and a failure reason. These are comment occurrences, not a share of all cars.

These MOT comments record tyres that were worn, damaged, or close to the legal tread depth when the car was inspected.

What to inspect

Check the tread depth and look for uneven wear, cracking, or damage on all four tyres.

Example MOT wording: NEARSIDE FRONT TYRE WORN CLOSE TO LEGAL LIMIT/WORN ON EDGE (5.2.3 (E))

Brake pad wear

VehicleScore MOT data includes 50 advisory comments and 18 failure comments in this group. Seen as both an advisory and a failure reason. These are comment occurrences, not a share of all cars.

These MOT comments record brake pads that were worn or below the inspection limit.

What to inspect

Ask for recent pad replacement and look at the remaining pad thickness.

Example MOT wording: FRONT BRAKE PAD(S) WEARING THIN (1.1.13 (A) (II))

Brake disc wear

VehicleScore MOT data includes 33 advisory comments in this group. Seen mainly as an advisory. These are comment occurrences, not a share of all cars.

These MOT comments record brake discs that were worn, scored, pitted, or corroded.

What to inspect

Look at the disc faces for deep scoring, a lip at the edge, and corrosion.

Example MOT wording: OFFSIDE REAR BRAKE DISC WORN, PITTED OR SCORED, BUT NOT SERIOUSLY WEAKENED (1.1.14 (A) (II))

Windscreen damage

VehicleScore MOT data includes 14 failure comments in this group. Seen mainly as a failure reason. These are comment occurrences, not a share of all cars.

These MOT comments record chips, cracks, or other windscreen damage in the driver’s view.

What to inspect

Look for chips and cracks, especially in the area swept by the wipers.

Example MOT wording: NEARSIDE FRONT WINDSCREEN WIPER DOES NOT CLEAR THE WINDSCREEN EFFECTIVELY (3.4 (B) (II))

Engine warning lamp

VehicleScore MOT data includes 3 failure comments in this group. Seen mainly as a failure reason. These are comment occurrences, not a share of all cars.

These MOT comments record an engine warning lamp that was on, or did not work, during the inspection.

What to inspect

Switch on the ignition and confirm the lamp comes on and then goes out. Ask what was diagnosed if it stayed on.

Example MOT wording: ENGINE MIL INOPERATIVE OR INDICATES A MALFUNCTION (8.2.1.2 (H))

KIA STONIC MOT reliability by year

A model year is only commented on when VehicleScore has at least 5 vehicles from that year.

Year	Vehicles	MOT tests	Pass rate	Recurring issues seen
2026	6	0	—	No recurring grouped MOT issue in this year sample
2025	8	0	—	No recurring grouped MOT issue in this year sample
2024	12	0	—	No recurring grouped MOT issue in this year sample
2023	21	26	88.5%	Tyre wear, Brake pad wear
2022	9	16	87.5%	No recurring grouped MOT issue in this year sample
2021	13	46	87%	Tyre wear, Brake pad wear
2020	18	79	89.9%	Brake pad wear, Tyre wear
2019	26	158	83.5%	Tyre wear, Brake disc wear
2018	23	154	88.3%	Tyre wear, Brake pad wear

What to check when buying a used KIA STONIC

This is an inspection checklist based on MOT comments in the VehicleScore sample. It does not mean the car you are looking at has these defects.

Tyre wear. Check the tread depth and look for uneven wear, cracking, or damage on all four tyres.
Brake pad wear. Ask for recent pad replacement and look at the remaining pad thickness.
Brake disc wear. Look at the disc faces for deep scoring, a lip at the edge, and corrosion.
Windscreen damage. Look for chips and cracks, especially in the area swept by the wipers.
Engine warning lamp. Switch on the ignition and confirm the lamp comes on and then goes out. Ask what was diagnosed if it stayed on.

Buying a KIA STONIC?

Common problems tell you what can affect KIA STONICs generally. VehicleScore can check the history of the actual car you're considering.

Where does this data come from?

VehicleScore analyses MOT histories from vehicles in its own dataset. Sample sizes vary by model, and a small sample is labelled as such. MOT data records roadworthiness and inspection defects. It does not capture every mechanical or electronic problem a car can have, and a comment on one test is not proof that the model has an inherent fault.

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