2021 Mazda Mx-30 -L Lux Ev — MOT failures & pass rate

Across 1,009 MOT tests analysed for the 2021 Mazda Mx-30 -L Lux Ev, the most common recorded failure areas were tyres, visibility and lighting & signalling. Its pass rate of 91.3% was in line with the average for cars of a similar age (91.2%).

Pass rate

1,009

MOT tests analysed

8.7%

Fail rate

in line with

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 Mazda Mx-30 -L Lux Ev
#	Category	% of tests affected	Tests
1	Tyres	6.4%	65
2	Visibility	3.3%	33
3	Lighting & signalling	2.2%	22
4	Brakes	1.2%	12
5	Suspension	0.7%	7
6	Body, structure & corrosion	0.2%	2

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 Mazda Mx-30 -L Lux Ev
#	Failure item	Times recorded
1	Tread depth	37
2	Headlamp aim	26
3	Wipers	19
4	Washers	18
5	Shock absorbers	9
6	Brake discs	8

Top advisory categories

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

Most common MOT advisories — 2021 Mazda Mx-30 -L Lux Ev
#	Category	% of tests with advisory	Tests
1	Tyres	23.0%	232
2	Brakes	14.4%	145
3	Suspension	8.6%	87
4	Other defects	7.0%	71
5	Visibility	1.8%	18
6	Seat belts & restraints	0.2%	2

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 Mx-30 -L Lux Ev
Mileage band	Tests	Fail rate
0-30k	779	8.1%
30-60k	223	10.3%

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 Mx-30 -L Lux Ev
Dataset year	Tests	Fail rate
2024	491	8.3%
2025	514	9.1%

What to check before buying a 2021 Mx-30 -L Lux Ev

Before buying a 2021 Mazda Mx-30 -L Lux Ev, focus on the areas it most often fails on. Tyres accounted for 6.4% of tests for this year.

Tyres (6.4% 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.
Visibility (3.3% 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.
Lighting & signalling (2.2% 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 Mazda Mx-30 -L Lux Evs pass their MOT?

91.3% of the 1,009 2021 Mazda Mx-30 -L Lux Ev MOT tests in this dataset passed — a 8.7% fail rate.

What is the most common MOT failure on a 2021 Mazda Mx-30 -L Lux Ev?

Tyres, recorded in 6.4% of tests, followed by visibility (3.3%).

Does the 2021 Mx-30 -L Lux Ev get worse with mileage?

Its MOT fail rate rises from 8.1% in the 0-30k band to 10.3% in the 30-60k band.

Methodology & source. Based on 1,009 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.