2020 Audi A1 S Line 25 S-A — MOT failures & pass rate

Across 944 MOT tests analysed for the 2020 Audi A1 S Line 25 S-A, the most common recorded failure areas were tyres, visibility and brakes. Its pass rate of 92.1% was above the average for cars of a similar age (90.6%).

Pass rate

944

MOT tests analysed

7.9%

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 A1 S Line 25 S-A
#	Category	% of tests affected	Tests
1	Tyres	5.9%	56
2	Visibility	1.5%	14
3	Brakes	1.5%	14
4	Lighting & signalling	0.9%	8
5	Seat belts & restraints	0.7%	7
6	Suspension	0.3%	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 — 2020 Audi A1 S Line 25 S-A
#	Failure item	Times recorded
1	Tread depth	35
2	Brake pads	12
3	Washers	10
4	Headlamp aim	9
5	Tyre pressure monitoring system	5
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 A1 S Line 25 S-A
#	Category	% of tests with advisory	Tests
1	Tyres	26.9%	254
2	Brakes	11.7%	110
3	Other defects	6.9%	65
4	Visibility	2.6%	25
5	Suspension	2.0%	19
6	Steering	0.4%	4

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 A1 S Line 25 S-A
Mileage band	Tests	Fail rate
0-30k	584	7.0%
30-60k	330	9.1%

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 A1 S Line 25 S-A
Dataset year	Tests	Fail rate
2023	307	6.8%
2024	311	8.4%
2025	312	8.6%

What to check before buying a 2020 A1 S Line 25 S-A

Before buying a 2020 Audi A1 S Line 25 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.
Visibility (1.5% 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.
Brakes (1.5% 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.

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 A1 S Line 25 S-As pass their MOT?

92.1% of the 944 2020 Audi A1 S Line 25 S-A MOT tests in this dataset passed — a 7.9% fail rate.

What is the most common MOT failure on a 2020 Audi A1 S Line 25 S-A?

Tyres, recorded in 5.9% of tests, followed by visibility (1.5%).

Does the 2020 A1 S Line 25 S-A get worse with mileage?

Its MOT fail rate rises from 7.0% in the 0-30k band to 9.1% in the 30-60k band.

Methodology & source. Based on 944 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.