SEAT Leon vs Vauxhall Astra: which is the better used buy?
On DVSA MOT records the SEAT Leon and the Vauxhall Astra are too close to call — 1.9 percentage points apart on first-time MOT passes once you allow for the age of each fleet, which is inside what the choice of cars counted can move. A winner is named only at 2 points or more. A pass with rectification at the station counts as a pass here, and as a failure in DVSA's own initial-test measure. Choose on the fault patterns and running costs below.
MOT first-time pass rate
Counted from DVSA’s anonymised MOT test records. “vs age-matched” compares each model against what the national fleet scores at the same age — the only fair better-or-worse number, because an older fleet fails more whatever its build quality.
| Model | Pass rate | Age-matched national | Difference | Tests |
|---|---|---|---|---|
| SEAT Leon | 80.1% | 79.1% | +1.0 | 19,349 |
| Vauxhall Astra | 72.5% | 73.4% | -0.9 | 62,313 |
These figures count every generation still on the road, not only the one described below: mostly SEAT Leons registered 2007–2022 and Vauxhall Astras registered 2001–2022.
Source: DVSA MOT Anonymised Data 2025 (Open Government Licence v3.0). National first-time pass rate 77.3%. Class 4 tests in Great Britain, test type NT (a normal annual test), retests excluded. A pass, or a pass with rectification at the station, counts as a first-time pass; DVSA's own initial-test measure counts a rectified pass as a failure and so reports a lower figure. Testing in Northern Ireland is run separately by the DVA under its own rules. The difference is worked out before rounding, so it can be 0.1 away from the two rounded figures beside it.
SEAT Leon
Mk3 2012–2020, Mk4 2020+ · compact family hatchback / estate
The SEAT Leon is one of the UK's best-value compact hatches, sharing its MQB platform with the VW Golf. The Mk3 (2012–2020) is strong overall, but owners report DSG mechatronic faults and oil consumption on early TSI engines. The Mk4 (2020+) has better infotainment. Best buy: 2021+ Mk4 1.5 eTSI mild hybrid. Worst: no single year stands out on DVSA MOT results.
What goes wrong
Safety recall R/2023/273recall
Front driver airbag replacement50,140 vehicles of this model (DVSA’s figures added up) · built between 19 March 2012 and 18 April 2017Large recall — 50,140 vehicles. Check a car by registration on GOV.UK.Safety recall R/2019/356recall
Possible fault in a turn signal23,732 vehicles in the whole recall (DVSA’s figure for every model it covers) · built between 1 November 2016 and 5 July 2018Large recall — 23,732 vehicles. Check a car by registration on GOV.UK.1.4 TSI timing belt (Mk3)major
No warning before a belt fails; a failed belt can cause serious engine damageMk3 1.2, 1.4 and 1.5 TSI (EA211 engines, including the 1.4 TSI ACT) — the camshafts are driven by a toothed belt, not a chain · £350–£600 belt and tensioner replacement at an independent specialistCheck: Check the service history for the cambelt inspection or change at the interval SEAT's schedule sets for the engine code. No record on a high-mileage or older car means budgeting for it now.DSG mechatronic unit (Mk3 2012–2016)major
Judder or shudder from standstill; harsh downshift; gearbox warning lightMk3 2012–2016 automatics: the 7-speed dry-clutch DQ200 on the smaller TSI petrols and 1.6 TDI, the 6-speed wet-clutch DQ250 on the 2.0 TDI and Cupra · Above 50,000 miles · £600–£1,200 mechatronic repair; £2,000–£3,500 full DSG replacementCheck: Confirm which gearbox the car has from its engine, then test in slow traffic and from cold. The wet-clutch DQ250 has a scheduled gearbox oil change, so look for it in the history; the dry-clutch DQ200 has none. A fluid change (£200–£300) often helps early-stage judder.
- Typical asking price:
- £4,995–£11,995, median £7,495 (middle 80% and median, cars on Autoza on 29 October 2026)
- Fuel economy:
- 44–51 mpg (1.5 eTSI mild hybrid, real-world UK mixed); 54–63 mpg (1.6 TDI diesel)
- Vehicle tax:
- £200/year standard rate from the second year, hybrids included — the alternative-fuel discount ended on 1 April 2025. A car registered from April 2017 with a list price over £40,000 when new adds the £440/year Expensive Car Supplement in years 2–6 (£640 in all). Cars registered 2001–2017 pay a CO2 band, roughly £20–£790/year (2026/27 rates).
- Best years:
- 2021, 2022, 2023
Also compare:
Vauxhall Astra
Mk7 / K (2015-2021) · A C-segment family hatchback (with an Astra Sports Tourer estate variant), sold in the UK against rivals such as the Ford Focus, VW Golf and SEAT Leon.
The Vauxhall Astra Mk7 (K), sold in the UK from 2015 to 2021, is an affordable, roomy family hatchback whose reliability depends on engine and build year, because the 2019 facelift brought new engines. On pre-facelift 2015–2018 cars, listen for timing-chain rattle on a cold start (1.4 Turbo and 1.6 CDTi). Best buy: 2020–2021. Worst: 2016–2017.
What goes wrong
Safety recall R/2018/332recall
Reduction in braking power where the brake pedal is applied slowly and constantly37,167 vehicles of this model (DVSA’s figures added up) · built between 23 March 2015 and 14 August 2018Large recall — 37,167 vehicles. Check a car by registration on GOV.UK.Clutch & dual-mass flywheel wear (1.4 Turbo petrol, manual, pre-facelift)major
Slipping clutch, a high or vague biting point, and difficulty selecting gears. A small number of cars have also been reported with the clutch pedal sticking to the floor after being pressed, and owners have separately reported a buzzing/vibration noise from the clutch slave cylinder pipe, most noticeable around 3,000-3,500rpm.2016-2019 (1.4 Turbo petrol, manual gearbox) · Premature dual-mass flywheel and clutch wear is typically reported from around 40,000-60,000 miles, though isolated cases of much earlier clutch failure have appeared on owner forums, so don't assume low mileage rules it out. · Roughly £500-£900 for a clutch kit and dual-mass flywheel replacement at an independent garageCheck: Test drive uphill and in stop-start traffic: feel for clutch slip under load, a biting point that has crept high, or notchy gear selection. Listen for buzzing/vibration from the transmission tunnel around 3,000rpm, and ask whether the clutch pedal has ever stuck down.Timing chain wear (1.4 Turbo petrol)critical
A rattling or tapping noise from the engine on cold start-up that fades once oil pressure builds, caused by a stretched timing chain or worn tensioner/guides. In more advanced cases a chain guide can crack, and if ignored the chain can eventually jump timing and cause serious engine damage.2016-2019 (1.4 Turbo petrol) · Cold-start rattle is most commonly reported from around 50,000-70,000 miles onward, although a handful of much lower-mileage cases have also been reported. · Around £600-£1,200 depending on how accessible the chain is, more if a broken guide or tensioner has caused secondary damageCheck: Start the engine from cold, ideally with the bonnet up, and listen for a rattle in the first few seconds that quietens as oil pressure builds. Ask for any evidence of chain, tensioner or guide work in the service history.Timing chain tensioner failure (1.6 CDTi diesel)critical
A persistent rattle on every cold start caused by a tensioner design that lacks a gasket, letting oil drain out overnight; the resulting daily rattle gradually stretches and wears the chain. Left unaddressed, this can progress to the chain jumping timing or, in the worst case, snapping.2015-2018 (1.6 CDTi diesel) · Rattle typically starts to appear from around 60,000-90,000 miles, and can progress to a genuine chain failure risk beyond 100,000 miles if it's never investigated. · Roughly £800-£1,500 or more for a chain and tensioner replacement; substantially higher if the engine has suffered internal damage from a jumped or broken chainCheck: Listen for a rattle on cold start that's present every single morning rather than a one-off noise. Ask specifically whether the timing chain and tensioner have been replaced, and treat a high-mileage 1.6 CDTi with no record of this work with caution.
- Typical asking price:
- £4,395–£8,668, median £6,190 (middle 80% and median, cars on Autoza on 29 October 2026)
- Fuel economy:
- 1.0 Turbo (105PS): 44–49 mpg. 1.2 Turbo: 42–47 mpg. 1.6 CDTi diesel: 55–62 mpg. 1.4 Turbo SRi: 38–43 mpg.
- Vehicle tax:
- £200/year standard rate from the second year, hybrids included — the alternative-fuel discount ended on 1 April 2025. A car registered from April 2017 with a list price over £40,000 when new adds the £440/year Expensive Car Supplement in years 2–6 (£640 in all). Cars registered 2001–2017 pay a CO2 band, roughly £20–£790/year (2026/27 rates).
- Best years:
- 2020, 2021
- Years to avoid:
- 2016, 2017
Which one suits you
SEAT Leon
Good for: Buyers wanting Golf-level engineering at a lower price. Family buyers who need the Leon ST (estate) for boot space. Performance fans who want the CUPRA Leon. Buyers doing mixed town/motorway commutes.
Less good for: Buyers who want the simplest possible ownership — the Golf has better dealer network depth in the UK. Mk3 DSG buyers doing city-only miles with no gearbox history. Buyers of an older TSI with no record of a cambelt inspection or change.
Vauxhall Astra
Good for: Buyers wanting a roomy, well-priced family hatch with genuinely low running costs on the smaller turbo petrols. The 2020–2021 facelift is the best-resolved version.
Less good for: Anyone considering the 1.4 Turbo SRi without confirmed timing-chain service history, or an early 2015–2016 car with a patchy record — both carry the highest risk of an expensive fault.
Frequently Asked Questions
Which is more reliable, the SEAT Leon or the Vauxhall Astra?
How do the MOT pass rates of the SEAT Leon and the Vauxhall Astra compare?
Which years of the SEAT Leon and Vauxhall Astra should I avoid?
Is the SEAT Leon or the Vauxhall Astra cheaper to run?
MOT figures are counted from DVSA records and are the only measured statistic here. Prices, economy and tax bands are indicative and vary by specification, condition and where the car has lived. Last reviewed: 2026-10-06 / 2026-10-06.