2021 Vauxhall Insignia prices

There are 34 used 2021 Vauxhall Insignia cars for sale from UK dealers on AskCar, as of 9 November 2026. Typical asking price £10,200 (the median: half cost less, half cost more). The cheapest is £5,679. The middle half are priced between £8,600 and £12,200. Median mileage: about 52,000 miles.

Dealers lowered the asking price on more than a quarter of 2021 Vauxhall Insignia cars: 10 of the 34 in the 14 days to 9 November 2026.

2021 Vauxhall Insignia prices by engine and mileage

EngineAll mileagesUnder 20,000 miles20,000 to 40,000 miles40,000 to 60,000 miles60,000 miles or more
1.5 diesel£10,000Too few for saleToo few for saleToo few for saleToo few for sale

Only 6 of the 2021 Vauxhall Insignia cars for sale have the 2.0 petrol engine, too few to give a typical asking price.

Only 1 of the 2021 Vauxhall Insignia cars for sale have the 1.6 diesel engine, too few to give a typical asking price.

Typical asking prices are of 2021 Vauxhall Insignia cars for sale on 9 November 2026, and are given only where at least 20 cars with a price are for sale.

2021 Vauxhall Insignia against other years

A 2020 Vauxhall Insignia car has a typical asking price of £9,000 and a 2022 one £11,200, as of 9 November 2026.

AskCar lists 1,105 used Vauxhall Insignia across the UK, from 749 dealerships.

As of 9 November 2026, AskCar lists 584,619 cars and vans from 12,676 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

2021 Vauxhall Insignia cars for sale now, page 1 of 2

This page picks out up to 10 cars in each of these groups: best value, cheapest, lowest mileage, recently reduced and newly advertised. A car in more than one group is listed in full once. The groups pick only from cars with photos and an AskCar estimate, priced at £500 or more and no more than 25% under that estimate. 30 of the 31 cars listed here meet these rules. Page 2 lists every other 2021 Vauxhall Insignia car, cheapest first, including the one the groups do not pick from.

The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 1,021 priced Vauxhall Insignia adverts on AskCar as of 9 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2021 Vauxhall Insignia.

Each car: year, make, model, engine and trim, power, gearbox, fuel, body, doors, colour; mileage; price and its changes; how the price compares with the AskCar estimate; emissions standard and ULEZ compliance where it holds; MOT; dealer and town; AskCar page. Each car's AskCar page has its full price history and cheaper cars like it.

This list leaves out 3 cars whose advertised mileage is lower than the mileage recorded at their last MOT test.

Best value 2021 Vauxhall Insignia: priced furthest below the AskCar estimate

These 10 are priced 1% to 11% under their AskCar estimate. Their asking prices run from £7,250 to £17,950.

Cheapest 2021 Vauxhall Insignia: the lowest asking prices

These 10 are priced £5,679 to £9,350. They have covered 40,193 to 122,950 miles.

Lowest-mileage 2021 Vauxhall Insignia

These 10 have covered 8,982 to 36,000 miles. Their asking prices run from £10,395 to £27,995.

Recently reduced 2021 Vauxhall Insignia: the biggest price reductions in the 14 days to 9 November 2026

The dealer lowered the asking price on each of these 9 in the 14 days to 9 November 2026. Their reductions since AskCar first saw them run from £500 to £1,500.

Newly advertised 2021 Vauxhall Insignia: first seen by AskCar in the 7 days to 9 November 2026

These 2 are the most recently advertised. Cars first seen on the same day are listed cheapest first.

Vauxhall Insignia by gearbox, fuel and body

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