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

Across 1,423 MOT tests analysed for the 2020 Audi Q3 S Line 45 S-A, the most common recorded failure areas were tyres, brakes and visibility. Its pass rate of 94.7% was above the average for cars of a similar age (90.6%).

Pass rate

1,423

MOT tests analysed

5.3%

Fail rate

better than

vs cars of similar age

3.9

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 45 S-A
#	Category	% of tests affected	Tests
1	Tyres	2.4%	34
2	Brakes	1.8%	25
3	Visibility	0.9%	13
4	Lighting & signalling	0.6%	8
5	Other defects	0.4%	6
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 45 S-A
#	Failure item	Times recorded
1	Brake pads	25
2	Tread depth	18
3	Washers	11
4	Registration plates	10
5	Headlamp aim	10
6	Brake discs	4

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 45 S-A
#	Category	% of tests with advisory	Tests
1	Tyres	23.4%	333
2	Brakes	16.9%	240
3	Other defects	5.8%	83
4	Suspension	3.1%	44
5	Visibility	2.7%	38
6	Lighting & signalling	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 45 S-A
Mileage band	Tests	Fail rate
0-30k	885	4.5%
30-60k	491	6.5%
60-90k	47	6.4%

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 45 S-A
Dataset year	Tests	Fail rate
2023	475	5.1%
2024	456	4.4%
2025	461	6.5%

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

Before buying a 2020 Audi Q3 S Line 45 S-A, focus on the areas it most often fails on. Tyres accounted for 2.4% of tests for this year.

Tyres (2.4% 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.
Brakes (1.8% 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.
Visibility (0.9% 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 2020 Audi Q3 S Line 45 S-As pass their MOT?

94.7% of the 1,423 2020 Audi Q3 S Line 45 S-A MOT tests in this dataset passed — a 5.3% fail rate.

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

Tyres, recorded in 2.4% of tests, followed by brakes (1.8%).

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

Its MOT fail rate rises from 4.5% in the 0-30k band to 6.4% in the 60-90k band.

Methodology & source. Based on 1,423 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.