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

Across 1,173 MOT tests analysed for the 2020 Audi A1 S Line Competition S-A, the most common recorded failure areas were tyres, lighting & signalling and visibility. Its pass rate of 93.7% was above the average for cars of a similar age (90.6%).

Pass rate

1,173

MOT tests analysed

6.3%

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 Competition S-A
#	Category	% of tests affected	Tests
1	Tyres	4.8%	56
2	Lighting & signalling	1.4%	16
3	Visibility	1.0%	12
4	Seat belts & restraints	0.5%	6
5	Brakes	0.5%	6
6	Emissions & environmental	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 — 2020 Audi A1 S Line Competition S-A
#	Failure item	Times recorded
1	Tread depth	24
2	Headlamp aim	19
3	Washers	8
4	Wipers	5
5	Headlamp cleaning device	3
6	Service brake performance	3

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 Competition S-A
#	Category	% of tests with advisory	Tests
1	Tyres	21.1%	247
2	Other defects	6.2%	73
3	Brakes	6.1%	72
4	Visibility	3.1%	37
5	Suspension	1.7%	20
6	Road wheels	0.6%	7

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 Competition S-A
Mileage band	Tests	Fail rate
0-30k	700	4.7%
30-60k	427	8.9%
60-90k	42	4.8%

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 Competition S-A
Dataset year	Tests	Fail rate
2023	396	7.3%
2024	375	5.1%
2025	386	6.7%

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

Before buying a 2020 Audi A1 S Line Competition S-A, focus on the areas it most often fails on. Tyres accounted for 4.8% of tests for this year.

Tyres (4.8% 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 (1.4% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
Visibility (1.0% 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 A1 S Line Competition S-As pass their MOT?

93.7% of the 1,173 2020 Audi A1 S Line Competition S-A MOT tests in this dataset passed — a 6.3% fail rate.

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

Tyres, recorded in 4.8% of tests, followed by lighting & signalling (1.4%).

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

Its MOT fail rate rises from 4.7% in the 0-30k band to 4.8% in the 60-90k band.

Methodology & source. Based on 1,173 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.