Kia NIRO - 2021
65.1 faults per 100 tests
Year average for all cars of 2021 is 80.0 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Kia NIRO, model year 2021.
Sample size: 23,870 cars, 54,650 tests and 35,584 recorded faults.
0%
Less faults compared to the average car of same model year
Less faults compared to the average car of same model year
Quick summary
Total: 23,870 cars
The 2021 KIA Niro has an overall defect rate of 65 per 100 vehicles, which is significantly lower than the yearly average of 79 per 100, making it 17% better than average. The model shows a notable trend with increased defect rates as mileage increases, particularly in the 31,000 to 62,000 miles range. It excels in several categories, recording particularly low defect rates in brakes and steering, at 13% and 0% respectively, compared to averages of 38% and 1%. Additionally, it performs very well in body and structure, with only 0% defects reported, far below the average of 2%. Overall, the KIA Niro demonstrates strong reliability compared to its peers.
Cars by mileage segment
Total: 23,870 cars
More model years for Kia NIRO
Other models from Kia
Categories
Brakes
▲ 66.5% better
13.4 faults / 100 tests
Year avg: 40.0 / 100 tests
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Significant brake effort recorded with no brake applied indicating a binding brake
- Excessive fluctuation in brake effort through each wheel revolution
- Brake lining or pad: worn below 1.5mm
- Brake disc or drum: significantly and obviously worn
Steering
▲ 57.1% better
0.3 faults / 100 tests
Year avg: 0.7 / 100 tests
- Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
- A steering ball joint: with excessive wear or free play
- A steering ball joint: with excessive wear or free play
- Steering rack gaiter or ball joint dust cover: damaged or deteriorated
- Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
Visibility
▲ 8.3% better
13.3 faults / 100 tests
Year avg: 14.5 / 100 tests
- Wiper blade: defective
- Wiper blade: missing or obviously not clearing the windscreen
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
- Wiper blade: missing or obviously not clearing the windscreen
- Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
Lights & Electrics
▲ 31.3% better
7.7 faults / 100 tests
Year avg: 11.2 / 100 tests
- A rear registration plate lamp or light source missing or inoperative: when rear registration plate has 2 or more lamps or light sources
- A rear registration plate lamp or light source missing or inoperative: when rear registration plate has only one lamp or all lamps not working
- The aim of a headlamp is not within limits laid down in the requirements
- A lens defective: which has no effect on emitted light
- A headlamp: missing, inoperative or more than ½ not functioning in the case of LED
Wheels & Suspension
▼ 7.9% worse
94.2 faults / 100 tests
Year avg: 87.3 / 100 tests
- Tyre tread depth not in accordance with the requirements
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- Tyre tread depth not in accordance with the requirements
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
Body/Structure
▲ 81.0% better
0.4 faults / 100 tests
Year avg: 2.1 / 100 tests
- A body panel or body component: damaged or corroded and likely to cause injury when grazed or contacted, or insecure
- A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
- Bumper: insecure or with damage likely to cause injury when grazed or contacted
- Bumper: insecure or with damage likely to cause injury when grazed or contacted
- A transmission shaft constant velocity joint boot: severely deteriorated
Equipment
▲ 60.0% better
0.6 faults / 100 tests
Year avg: 1.5 / 100 tests
- A seat belt: webbing or flexible stalk significantly stretched or weakened
- Seat belt buckle missing, damaged or not functioning as intended
- A seat belt: or flexible stalk damaged
- A seat belt: webbing or flexible stalk significantly stretched or weakened
- A seat belt:
Other
▲ 85.2% better
0.4 faults / 100 tests
Year avg: 2.7 / 100 tests
- Engine MIL inoperative or indicating a malfunction
- Engine MIL inoperative or indicating a malfunction
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
- Any part of the noise suppression system: insecure
- Fluid: leaking continuously and likely to pose a serious risk to road safety
Fault rate by mileage segment
Model
Year average
* Metric: faults per 100 tests.
Most common faults (Top 10)
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 13,872
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 5,696
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 2,179
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 1,487
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 1,376
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 1,165
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 1,064
Wiper blade: defective
MINOR
Occurrences: 974
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 812
Wiper blade: missing or obviously not clearing the windscreen
PRS
Occurrences: 759
Serious faults (Top 10)
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 1,487
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 1,165
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 1,064
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 812
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 125
A headlamp: missing, inoperative or more than ½ not functioning in the case of LED
FAIL
Occurrences: 101
A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
FAIL
Occurrences: 83
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 80
Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
FAIL
Occurrences: 79
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 79