2021 BMW 3 Series 2.0 318i M Sport

Overview

• Make: BMW
• Model: 3 Series
• Trim: M Sport
• Version: 2.0 318i M Sport Auto RWD Euro 6 (s/s) 4dr (154 bhp)
• Year: 2021
• Mileage: 35,503 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 154 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series M Sport has covered 35,503 miles, around 19,300 fewer miles than is typical for its age. Its asking price of £20,998 is £282 above the AskCar estimate of £20,716. The AskCar estimate draws on 6,897 BMW 3 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. Since we first spotted the advert 35 days ago, the asking price has dropped by £500. Its advertised mileage matches the government's MOT record. The seller is Arnold Clark East Kilbride Vauxhall, based in East Kilbride. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £282 (1%) over the AskCar estimate of £20,716.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 6,897 priced BMW 3 Series adverts across different ages and specifications, as of 5 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 35 days.

Price history

AskCar first saw this advert on 1 October 2026 at £21,498. Its asking price is now £20,998, £500 less. The latest price cut was seen on 28 October 2026.

Price changes recorded:

• 1 October 2026: £21,498
• 28 October 2026: £20,998

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 28 September 2027.

It has had 4 MOTs. The latest, on 29 September 2026, passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge.

Mileage at that test: 35,511 miles, which matches the advertised 35,503 miles.

Advertised mileage is about 19,300 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

146 other 2021 BMW 3 Series M Sport 2.0 petrol automatic saloons are for sale at UK dealers, from £14,000 to £26,950, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, black. Mileage: 35,384 miles. Price: £23,995, £2,997 more than this car. Dealer: A1 Auto Solutions in Maidenhead. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-734cde9507b8
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 36,073 miles. Price: £18,299, £2,699 less than this car. Dealer: Motorpoint Manchester in Manchester. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-c0d2eb226abf
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 34,884 miles. Price: £21,495, £497 more than this car. Dealer: Skinners Of Rye in Rye. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-6b14e1d20ad7

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, black, 18 miles from this car. Mileage: 31,866 miles. Price: £19,640, £1,358 less than this car. Dealer: Evans Halshaw Vauxhall Kilmarnock in Kilmarnock. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-20dc9fcd073c