Part of the Vauxhall Insignia B (2017–2022) guide: best and worst years compared.
2020 Vauxhall Insignia: common problems and MOT failures
What MOT testers find on the Vauxhall Insignia first registered in 2020: we looked at the 3,957 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.
What goes wrong more than usual on a 2020 Vauxhall Insignia?
Parts flagged at MOT more often on the 2020 Vauxhall Insignia than on all cars registered in 2020.
- Brake pads2× usualVauxhall Insignia15.2% All 2020 cars7.7%
Failed outright at MOT: 4.1%, against 1.4% of all 2020 cars. The rest were advisories or minor defects.
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.
Petrol or diesel: does it make a difference?
The same figures for each fuel on its own. Check which one the car you're looking at is: it's on the logbook and in its MOT history.
| Fuel | Pass first time | Stands out | MOTs |
|---|---|---|---|
| Petrol | 85% | Brake pads 1.9× | 1,462 |
| Diesel | 83% | Brake pads 2×, Exhaust system 13×, Number plates 2.3× | 2,495 |
Common 2020 Vauxhall Insignia MOT failures and advisories
The share of 2020 Vauxhall Insignia MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.
- Tyres26% of testsRough price £70–£150
At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.
- Brakes19% of testsRough price £150–£350
At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.
- Wipers, windscreen and mirrors8% of testsRough price £15–£250
At the viewing: Check for chips in the driver's view, and test the wipers and washers.
- Lights and electrics4% of testsRough price £10–£80
At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.
- Suspension2% of testsRough price £120–£400
At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.
- Seats and seatbelts2% of testsRough price £80–£250
At the viewing: Pull each seatbelt sharply. It should lock, and retract cleanly.
Questions to ask the seller before buying a 2020 Vauxhall Insignia
Ask before you travel to see it. A seller who knows the car will have answers, and receipts.
- Any recent work on the brake pads? (Flagged at MOT 2× as often on the 2020 Vauxhall Insignia as on other cars the same age.)
- Can I see the service history and receipts for any big jobs?
Looking at a Vauxhall Insignia?
Check the actual car: its own MOT history, mileage and what to ask the seller. Free, no sign-up.
Other years
Every year of the Vauxhall Insignia compared
| Year | MOT tests | Most flagged |
|---|---|---|
| 2022 | 633 | Tyres 39% |
| 2021 | 1,876 | Tyres 23% |
| 2019 | 23,888 | Tyres 29% |
| 2018 | 37,936 | Tyres 30% |
| 2017 | 46,306 | Tyres 32% |
| 2016 | 66,473 | Tyres 34% |
| 2015 | 85,058 | Tyres 36% |
| 2014 | 74,941 | Tyres 36% |
| 2013 | 61,358 | Tyres 37% |
| 2012 | 59,110 | Tyres 39% |
| 2011 | 66,448 | Suspension 40% |
| 2010 | 39,810 | Suspension 43% |
| 2009 | 27,884 | Suspension 47% |
| 2008 | 310 | Suspension 41% |
Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of Vauxhall Insignia cars first registered in 2020. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score