2021 SEAT Mii prices

There are 12 used 2021 SEAT Mii cars for sale from UK dealers on AskCar, as of 8 November 2026. Typical asking price £10,200 (the median: half cost less, half cost more). The cheapest is £8,999. The middle half are priced between £9,900 and £10,800. Median mileage: about 27,000 miles.

Dealers lowered the asking price on more than one in five of 2021 SEAT Mii cars: 3 of the 12 in the 14 days to 8 November 2026.

AskCar lists 134 used SEAT Mii across the UK, from 128 dealerships.

As of 8 November 2026, AskCar lists 595,629 cars and vans from 12,891 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

2021 SEAT Mii cars for sale now

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. All 12 cars listed here meet these rules.

The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 125 priced SEAT Mii adverts on AskCar as of 8 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2021 SEAT Mii.

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.

Best value 2021 SEAT Mii: priced furthest below the AskCar estimate

Their asking prices run from £8,999 to £10,860.

Cheapest 2021 SEAT Mii: the lowest asking prices

These 10 are priced £8,999 to £10,799. They have covered 9,764 to 40,000 miles.

Lowest-mileage 2021 SEAT Mii

These 10 have covered 9,764 to 37,226 miles. Their asking prices run from £9,470 to £10,999.

Recently reduced 2021 SEAT Mii: the biggest price reductions in the 14 days to 8 November 2026

The dealer lowered the asking price on each of these 3 in the 14 days to 8 November 2026. Their reductions since AskCar first saw them run from £400 to £1,220.

Newly advertised 2021 SEAT Mii: first seen by AskCar in the 7 days to 8 November 2026

These 6 are the most recently advertised. Cars first seen on the same day are listed cheapest first.

SEAT Mii by gearbox, fuel and body

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