2021 BMW 3 Series 2.0 318d MHT M Sport

Overview

• Make: BMW
• Model: 3 Series
• Trim: M Sport
• Version: 2.0 318d MHT M Sport Auto RWD Euro 6 (s/s) 5dr Touring (148 bhp)
• Year: 2021
• Mileage: 48,000 miles
• Fuel: Diesel, mild hybrid
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 148 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 129 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series M Sport has covered 48,000 miles. The AskCar estimate for this car is £20,207. It is priced at £20,995, which is £788 above that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 6,902 BMW 3 Series cars across different ages and specifications. It first appeared in our advert records today. The advertised mileage is lower than the latest MOT reading of 48,747 miles. Ask the dealer to explain. Its MOT is recorded as valid until 29 October 2027. You can find this car at Newtons of Ashley in Dorset. 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: £788 (3%) over the AskCar estimate of £20,207.

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

AskCar first saw this 2021 BMW 3 Series advertised today. About half of 2021 BMW 3 Series cars are gone from sale within a month of being advertised: 433 of the 918 first advertised between 10 July 2026 and 3 October 2026.

Price history

AskCar first saw this advert on 6 November 2026 at £20,995. 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 29 October 2027.

It has had 3 MOTs. The latest, on 30 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 48,747 miles. The advert says 48,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 7,200 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

34 other 2021 BMW 3 Series M Sport 2.0 diesel automatic estates are for sale at UK dealers, from £13,750 to £29,950, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 diesel estate, grey. Mileage: 47,910 miles. Price: £25,350, £4,355 more than this car. Dealer: Sytner Sheffield BMW in Sheffield. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-8d676d2bc383
• 2021 BMW 3 Series M Sport, 2.0 diesel estate, grey. Mileage: 48,197 miles. Price: £23,499, £2,504 more than this car. Dealer: Fresh Motors in Watton. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-a0d90117e984
• 2021 BMW 3 Series M Sport, 2.0 diesel estate, black. Mileage: 47,663 miles. Price: £17,999, £2,996 less than this car. Dealer: Berkeley Motor Group in Greenford. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-87938ae16550

• The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel estate, blue, 10 miles from this car. Mileage: 102,000 miles. Price: £13,750, £7,245 less than this car. Dealer: Trust Motor Company in Ferndown. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-a3695b1d6d0b