2020 Vauxhall Astra Turbo Cvt — MOT failures & pass rate

Across 1,114 MOT tests analysed for the 2020 Vauxhall Astra Turbo Cvt, the most common recorded failure areas were emissions & environmental, tyres and lighting & signalling. Its pass rate of 89.8% was in line with the average for cars of a similar age (90.6%).

Pass rate

1,114

MOT tests analysed

10.2%

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 Turbo Cvt
#	Category	% of tests affected	Tests
1	Emissions & environmental	5.8%	64
2	Tyres	4.0%	44
3	Lighting & signalling	3.3%	37
4	Brakes	2.3%	26
5	Suspension	0.8%	9
6	Visibility	0.8%	9

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 Turbo Cvt
#	Failure item	Times recorded
1	Malfunction indicator lamp	61
2	Headlamp aim	30
3	Brake pads	21
4	Tyre pressure monitoring system	12
5	Stop lamp	11
6	Tread depth	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 Turbo Cvt
#	Category	% of tests with advisory	Tests
1	Tyres	13.3%	148
2	Brakes	11.4%	127
3	Other defects	4.3%	48
4	Suspension	1.2%	13
5	Visibility	0.4%	5
6	Body, structure & corrosion	0.4%	5

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 Turbo Cvt
Mileage band	Tests	Fail rate
0-30k	627	8.8%
30-60k	386	12.4%
60-90k	91	11.0%

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 Astra Turbo Cvt
Dataset year	Tests	Fail rate
2023	376	10.4%
2024	369	10.0%
2025	357	10.6%

What to check before buying a 2020 Astra Turbo Cvt

Before buying a 2020 Vauxhall Astra Turbo Cvt, focus on the areas it most often fails on. Emissions & environmental accounted for 5.8% of tests for this year.

Emissions & environmental (5.8% of tests): More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair: £100–£600.
Tyres (4.0% 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 (3.3% 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 Vauxhall Astra Turbo Cvts pass their MOT?

89.8% of the 1,114 2020 Vauxhall Astra Turbo Cvt MOT tests in this dataset passed — a 10.2% fail rate.

What is the most common MOT failure on a 2020 Vauxhall Astra Turbo Cvt?

Emissions & environmental, recorded in 5.8% of tests, followed by tyres (4.0%).

Does the 2020 Astra Turbo Cvt get worse with mileage?

Its MOT fail rate rises from 8.8% in the 0-30k band to 11.0% in the 60-90k band.

Methodology & source. Based on 1,114 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.