2020 Audi Q3 S Line Vor 45 Quat S-A — MOT failures & pass rate

Across 1,344 MOT tests analysed for the 2020 Audi Q3 S Line Vor 45 Quat S-A, the most common recorded failure areas were tyres, brakes and lighting & signalling. Its pass rate of 93.9% was above the average for cars of a similar age (90.6%).

Pass rate

1,344

MOT tests analysed

6.1%

Fail rate

better than

vs cars of similar age

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 — 2020 Audi Q3 S Line Vor 45 Quat S-A
#	Category	% of tests affected	Tests
1	Tyres	4.5%	60
2	Brakes	1.0%	13
3	Lighting & signalling	1.0%	13
4	Visibility	0.5%	7
5	Other defects	0.3%	4
6	Seat belts & restraints	0.3%	4

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 — 2020 Audi Q3 S Line Vor 45 Quat S-A
#	Failure item	Times recorded
1	Headlamp aim	13
2	Brake pads	13
3	Washers	9
4	Tread depth	7
5	Registration plates	6
6	Brake discs	3

Top advisory categories

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

Most common MOT advisories — 2020 Audi Q3 S Line Vor 45 Quat S-A
#	Category	% of tests with advisory	Tests
1	Tyres	19.6%	264
2	Brakes	16.1%	216
3	Other defects	8.1%	109
4	Suspension	3.4%	46
5	Visibility	3.4%	45
6	Body, structure & corrosion	0.2%	3

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 — 2020 Q3 S Line Vor 45 Quat S-A
Mileage band	Tests	Fail rate
0-30k	836	5.4%
30-60k	477	7.1%
60-90k	30	10.0%

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 — 2020 Q3 S Line Vor 45 Quat S-A
Dataset year	Tests	Fail rate
2023	448	5.6%
2024	443	7.4%
2025	438	5.5%

What to check before buying a 2020 Q3 S Line Vor 45 Quat S-A

Before buying a 2020 Audi Q3 S Line Vor 45 Quat S-A, focus on the areas it most often fails on. Tyres accounted for 4.5% of tests for this year.

Tyres (4.5% 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.
Brakes (1.0% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
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.

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 2020 Audi Q3 S Line Vor 45 Quat S-As pass their MOT?

93.9% of the 1,344 2020 Audi Q3 S Line Vor 45 Quat S-A MOT tests in this dataset passed — a 6.1% fail rate.

What is the most common MOT failure on a 2020 Audi Q3 S Line Vor 45 Quat S-A?

Tyres, recorded in 4.5% of tests, followed by brakes (1.0%).

Does the 2020 Q3 S Line Vor 45 Quat S-A get worse with mileage?

Its MOT fail rate rises from 5.4% in the 0-30k band to 10.0% in the 60-90k band.

Methodology & source. Based on 1,344 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.