2021 Hyundai Kona N Line T-Gdi Mhev — MOT failures & pass rate

Across 1,375 MOT tests analysed for the 2021 Hyundai Kona N Line T-Gdi Mhev, the most common recorded failure areas were visibility, tyres and lighting & signalling. Its pass rate of 92.7% was above the average for cars of a similar age (91.2%).

Pass rate

1,375

MOT tests analysed

7.3%

Fail rate

better than

vs cars of similar age

3.5

Avg age at test (yrs)

How it compares

Fail rate for this model-year against the segment and national averages for cars of a similar age.

Top failure categories

Most common MOT failure areas — 2021 Hyundai Kona N Line T-Gdi Mhev
#	Category	% of tests affected	Tests
1	Visibility	3.5%	48
2	Tyres	3.4%	46
3	Lighting & signalling	1.6%	22
4	Suspension	0.9%	12
5	Brakes	0.9%	12
6	Emissions & environmental	0.4%	6

Percentage of tests with at least one failure recorded in each category.

Most common specific failures

The exact components most often recorded as failures — more specific than the categories above.

Most frequently recorded failure items — 2021 Hyundai Kona N Line T-Gdi Mhev
#	Failure item	Times recorded
1	Wipers	50
2	Tread depth	37
3	Pins and bushes	15
4	Headlamp aim	14
5	Washers	8
6	Brake pads	6

Top advisory categories

Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.

Most common MOT advisories — 2021 Hyundai Kona N Line T-Gdi Mhev
#	Category	% of tests with advisory	Tests
1	Tyres	14.5%	199
2	Brakes	9.2%	127
3	Other defects	6.7%	92
4	Visibility	2.7%	37
5	Suspension	2.5%	34
6	Emissions & environmental	0.6%	8

Failure rate by mileage

Higher-mileage cars tend to fail more — often the most useful guide to real condition.

MOT fail rate by recorded mileage band.

Fail rate by recorded mileage — 2021 Kona N Line T-Gdi Mhev
Mileage band	Tests	Fail rate
0-30k	868	6.6%
30-60k	486	8.0%

Failure rate by age

How this model-year's MOT fail rate climbs as the cars get older.

Trend over time

Fail rate by dataset year — 2021 Kona N Line T-Gdi Mhev
Dataset year	Tests	Fail rate
2024	670	7.3%
2025	694	7.3%

What to check before buying a 2021 Kona N Line T-Gdi Mhev

Before buying a 2021 Hyundai Kona N Line T-Gdi Mhev, focus on the areas it most often fails on. Visibility accounted for 3.5% of tests for this year.

Visibility (3.5% of tests): Wipers, washers, mirrors and screen damage — usually inexpensive, but check for chips in the driver's line of sight. Typical repair: £15–£150.
Tyres (3.4% of tests): Usually a quick, known-cost fix, but check tread, age and uneven wear (which can hint at alignment or suspension issues). Typical repair: £50–£120 per tyre.
Lighting & signalling (1.6% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.

Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.

Frequently asked questions

How many 2021 Hyundai Kona N Line T-Gdi Mhevs pass their MOT?

92.7% of the 1,375 2021 Hyundai Kona N Line T-Gdi Mhev MOT tests in this dataset passed — a 7.3% fail rate.

What is the most common MOT failure on a 2021 Hyundai Kona N Line T-Gdi Mhev?

Visibility, recorded in 3.5% of tests, followed by tyres (3.4%).

Does the 2021 Kona N Line T-Gdi Mhev get worse with mileage?

Its MOT fail rate rises from 6.6% in the 0-30k band to 8.0% in the 30-60k band.

Methodology & source. Based on 1,375 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-01. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.