2018 Audi S1 prices

There are 5 used 2018 Audi S1 cars for sale from UK dealers on AskCar, as of 6 November 2026. The cheapest is £15,950.

Dealers lowered the asking price on more than one in ten of 2018 Audi S1 cars: 1 of the 5 in the 14 days to 6 November 2026.

AskCar lists 49 used Audi S1 across the UK, from 44 dealerships.

As of 6 November 2026, AskCar lists 598,752 cars and vans from 12,905 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

2018 Audi S1 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 5 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 47 priced Audi S1 adverts on AskCar as of 6 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2018 Audi S1.

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 2018 Audi S1: priced furthest below the AskCar estimate

Their asking prices run from £15,950 to £20,995.

Cheapest 2018 Audi S1: the lowest asking prices

These 5 are priced £15,950 to £20,995. They have covered 22,550 to 60,868 miles.

Lowest-mileage 2018 Audi S1

These 5 have covered 22,550 to 60,868 miles. Their asking prices run from £15,950 to £20,995.

Recently reduced 2018 Audi S1: the biggest price reductions in the 14 days to 6 November 2026

The dealer lowered the asking price on this car in the 14 days to 6 November 2026.

Newly advertised 2018 Audi S1: first seen by AskCar in the 7 days to 6 November 2026

This car is the most recently advertised.

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