2020 Vauxhall Astra Business T — MOT failures & pass rate

Across 1,518 MOT tests analysed for the 2020 Vauxhall Astra Business T, the most common recorded failure areas were lighting & signalling, emissions & environmental and tyres. Its pass rate of 91.4% was in line with the average for cars of a similar age (90.5%). Higher-mileage examples failed more often — 13.1% in the 60-90k group versus 5.8% in the 0-30k group.

Pass rate

1,518

MOT tests analysed

8.6%

Fail rate

in line with

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 Vauxhall Astra Business T
#	Category	% of tests affected	Tests
1	Lighting & signalling	4.1%	62
2	Emissions & environmental	3.3%	50
3	Tyres	2.5%	38
4	Brakes	2.0%	31
5	Visibility	1.3%	20
6	Body, structure & corrosion	0.9%	14

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 Vauxhall Astra Business T
#	Failure item	Times recorded
1	Malfunction indicator lamp	48
2	Brake pads	34
3	Headlamp aim	31
4	Stop lamp	26
5	Washers	18
6	Tyre pressure monitoring system	11

Top advisory categories

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

Most common MOT advisories — 2020 Vauxhall Astra Business T
#	Category	% of tests with advisory	Tests
1	Tyres	15.2%	230
2	Brakes	14.2%	216
3	Other defects	6.1%	93
4	Visibility	2.0%	31
5	Lighting & signalling	1.0%	15
6	Suspension	0.8%	12

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 Astra Business T
Mileage band	Tests	Fail rate
0-30k	908	5.8%
30-60k	514	12.4%
60-90k	84	13.1%

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 Astra Business T
Dataset year	Tests	Fail rate
2023	518	10.2%
2024	488	6.2%
2025	505	9.5%

What to check before buying a 2020 Astra Business T

Before buying a 2020 Vauxhall Astra Business T, focus on the areas it most often fails on. Lighting & signalling accounted for 4.1% of tests for this year.

Lighting & signalling (4.1% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
Emissions & environmental (3.3% of tests): More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair: £100–£600.
Tyres (2.5% 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.

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 Vauxhall Astra Business Ts pass their MOT?

91.4% of the 1,518 2020 Vauxhall Astra Business T MOT tests in this dataset passed — a 8.6% fail rate.

What is the most common MOT failure on a 2020 Vauxhall Astra Business T?

Lighting & signalling, recorded in 4.1% of tests, followed by emissions & environmental (3.3%).

Does the 2020 Astra Business T get worse with mileage?

Its MOT fail rate rises from 5.8% in the 0-30k band to 13.1% in the 60-90k band.

Methodology & source. Based on 1,518 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.