2021 Audi Q5 45 Mhev Quat S-A — MOT failures & pass rate

Across 1,376 MOT tests analysed for the 2021 Audi Q5 45 Mhev Quat S-A, the most common recorded failure areas were tyres, lighting & signalling and visibility. Its pass rate of 92.5% was above the average for cars of a similar age (91.2%).

Pass rate

1,376

MOT tests analysed

7.5%

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 Audi Q5 45 Mhev Quat S-A
#	Category	% of tests affected	Tests
1	Tyres	5.9%	81
2	Lighting & signalling	1.0%	14
3	Visibility	0.7%	10
4	Brakes	0.7%	9
5	Seat belts & restraints	0.3%	4
6	Emissions & environmental	0.2%	3

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 Audi Q5 45 Mhev Quat S-A
#	Failure item	Times recorded
1	Tread depth	26
2	Headlamp aim	13
3	Brake pads	10
4	Wipers	7
5	Washers	5
6	Rear fog lamp	3

Top advisory categories

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

Most common MOT advisories — 2021 Audi Q5 45 Mhev Quat S-A
#	Category	% of tests with advisory	Tests
1	Tyres	14.7%	202
2	Brakes	9.4%	130
3	Other defects	7.8%	108
4	Visibility	2.5%	35
5	Suspension	1.2%	16
6	Lighting & signalling	0.8%	11

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 Q5 45 Mhev Quat S-A
Mileage band	Tests	Fail rate
0-30k	735	5.9%
30-60k	604	9.8%
60-90k	30	0.0%

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 Q5 45 Mhev Quat S-A
Dataset year	Tests	Fail rate
2024	672	7.3%
2025	683	7.9%

What to check before buying a 2021 Q5 45 Mhev Quat S-A

Before buying a 2021 Audi Q5 45 Mhev Quat S-A, focus on the areas it most often fails on. Tyres accounted for 5.9% of tests for this year.

Tyres (5.9% 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 (1.0% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
Visibility (0.7% 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.

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 Audi Q5 45 Mhev Quat S-As pass their MOT?

92.5% of the 1,376 2021 Audi Q5 45 Mhev Quat S-A MOT tests in this dataset passed — a 7.5% fail rate.

What is the most common MOT failure on a 2021 Audi Q5 45 Mhev Quat S-A?

Tyres, recorded in 5.9% of tests, followed by lighting & signalling (1.0%).

Does the 2021 Q5 45 Mhev Quat S-A get worse with mileage?

Its MOT fail rate rises from 5.9% in the 0-30k band to 0.0% in the 60-90k band.

Methodology & source. Based on 1,376 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.