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: 65,119 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 154 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 65,119 miles, this 2021 BMW 3 Series M Sport has covered about 10,000 more miles than other 2021 BMW 3 Series cars. Its asking price of £16,995 is £217 below the AskCar estimate of £17,212. To work out the AskCar estimate, we analyse UK dealer adverts for 6,902 BMW 3 Series cars across different ages and specifications. We have tracked this advert for 29 days. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Bridgend Ford, based in Bridgend. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £217 (1%) under the AskCar estimate of £17,212.

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 6,902 priced BMW 3 Series adverts across different ages and specifications, as of 6 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 29 days.

Price history

AskCar first saw this advert on 8 October 2026 at £16,995. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 5 October 2027.

It has had 4 MOTs. The latest, on 6 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 65,128 miles, which matches the advertised 65,119 miles.

Advertised mileage is about 10,000 miles higher than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

143 other 2021 BMW 3 Series M Sport 2.0 petrol automatic saloons are for sale at UK dealers, from £14,000 to £25,975, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, blue. Mileage: 64,800 miles. Price: £17,990, £995 more than this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-a2d320d1dc39
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 65,897 miles. Price: £17,475, £480 more than this car. Dealer: PCBS Sales in Tonbridge. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-04afec511e7f
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 66,051 miles. Price: £16,849, £146 less than this car. Dealer: Cars Yard in Harrow. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-dd04b0763802

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey, 16 miles from this car. Mileage: 87,565 miles. Price: £14,995, £2,000 less than this car. Dealer: Cardiff Trade Sales in Cardiff. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-702837a69868