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: 44,000 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 154 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: White
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series M Sport is advertised with 44,000 miles on the clock. Its asking price of £19,999 is £306 above the AskCar estimate of £19,693. The AskCar estimate uses UK dealer asking prices, including 6,897 BMW 3 Series adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 161 days ago. Its asking price has since fallen by £300. Ask the dealer why the advert shows fewer miles than the 44,701 recorded at the latest MOT. The latest recorded MOT expiry date is 23 September 2026, which has passed. Confirm its status with the dealer. It is for sale at AB Car Sales in Gunnislake. 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: £306 (1%) over the AskCar estimate of £19,693.

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 161 days.

Price history

AskCar first saw this advert on 28 May 2026 at £20,299. Its asking price is now £19,999, £300 less. The latest price cut was seen on 18 September 2026.

Price changes recorded:

• 28 May 2026: £20,299
• 18 September 2026: £19,999

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: the latest record we hold ran out on 23 September 2026; ask the dealer for the current MOT.

It failed its MOT on 18 September 2025 (nearside rear brake pad(s) less than 1.5 mm thick; offside rear brake pad(s) less than 1.5 mm thick) and passed later the same day.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge AAL; offside rear tyre worn close to legal limit/worn on edge; nearside front tyre worn close to legal limit/worn on edge; and 3 more.

Mileage at that test: 44,701 miles. The advert says 44,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 10,800 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, grey. Mileage: 44,000 miles. Price: £18,495, £1,504 less than this car. Dealer: Car Quay in Derby. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-a4283566e53a
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 43,000 miles. Price: £20,985, £986 more than this car. Dealer: Brooklands Motor Centre in Leeds. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-bbd215a52f63
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 45,121 miles. Price: £15,495, £4,504 less than this car. Dealer: KZ Autos in Coventry. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-86b5c668ee2d

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, black, 34 miles from this car. Mileage: 60,400 miles. Price: £20,153, £154 more than this car. Dealer: Vertu BMW Exeter in Exeter. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-7b304c6096c5