Vauxhall Astra K: best and worst years, and what goes wrong
How each year of the Vauxhall Astra K did at the MOTs done during 2023–2025, compared with other cars the same age, the weak spots that keep coming up, and what to check before you buy one. From 627,857 MOT tests.
Which Vauxhall Astra K years are best and worst at their MOT?
First-time MOT pass rate for each year of the Vauxhall Astra K, against all cars registered the same year. Older cars fail more, so the comparison with cars the same age is what matters.
| Year | Pass first time | All cars that year | Stands out | MOT tests |
|---|---|---|---|---|
| 2015* | 69% | 74% -5 | Coil springs 2.2× usual | 140,327 |
| 2016 | 76% | 77% -1 | Tyre pressure monitoring system 5.6× usual | 167,049 |
| 2017 | 79% | 80% -1 | Tyre pressure monitoring system 3.7× usual | 137,261 |
| 2018 | 81% | 83% -2 | Headlights 2× usual | 89,580 |
| 2019 | 84% | 85% -1 | Nothing unusual | 62,909 |
| 2020 | 86% | 87% -1 | Brake pads 1.6× usual | 18,904 |
| 2021 | 88% | 87% +1 | Brake pads 2.2× usual | 11,827 |
Common Vauxhall Astra K MOT failures, year after year
Parts flagged at MOT well above the usual rate for cars the same age, in more than one year of this generation. Repeat findings like these are much less likely to be chance.
- Tyre pressure monitoring systemup to 5.6× usual
Stands out in 2 years: 2017, 2016.
Rough price £70–£150 our estimateAt the viewing: Check the tread on all four tyres, including the inside edges. Uneven wear can point to tracking or suspension problems.
- Engine oil leaksup to 2.6× usual
Stands out in 2 years: 2017, 2016.
Rough price £80–£600 our estimateAt the viewing: Look under the engine and where the car is usually parked for fresh oil. Ask whether the leak has been looked at.
- Brake padsup to 2.2× usual
Stands out in 2 years: 2021, 2020.
Rough price £75–£175 (one axle) ClickMechanicAt the viewing: Listen for squealing or grinding when braking, and look through the wheel at how much pad is left.
- Headlightsup to 2× usual
Stands out in 2 years: 2018, 2016.
Rough price £40–£400 our estimateAt the viewing: Check both headlights on dipped and full beam, and look for cloudy or cracked lenses.
What usually goes wrong with the Vauxhall Astra K?
From owners, mechanics and UK buying guides, in our own words. Not every car will have them.
Brief loss of power with a metallic noise
The 1.0 petrol and 1.6 diesel can briefly lose power with a metallic noise. On diesels, a faulty oil pressure sensor is one cause.
Check: Drive it for 20 minutes or more. Any sudden dips in power or engine warning lights are a reason to ask questions.
Exhaust smell in the cabin (diesel)
A badly fitted clamp between the particulate filter and turbo can let exhaust fumes into the cabin.
Check: Sit in the car with the engine running and the fan on. Any exhaust smell needs fixing before you buy.
Front suspension creak
A worn lower arm bush makes a creak over speed bumps.
Check: Drive slowly over a speed bump and listen at the front.
Creaking clutch (1.4 turbo manual)
A vibrating clutch pipe can creak loudly when you use the clutch.
Check: Press and release the clutch a few times and listen.
If it needs doing: Clutch replacement, about £250–£600. ClickMechanic
Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting each car's main test of the year (not retests). A weak spot needs at least 30 cars flagged and must stay 1.5× the usual rate even at the cautious end of a 95% confidence range. Generation years are approximate: cars registered in a changeover year (*) can be either generation. How we score
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