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) 4dr (148 bhp)
• Year: 2021
• Mileage: 46,653 miles
• Fuel: Diesel, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 148 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: White
• CO2: 127 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series M Sport is advertised with 46,653 miles, approximately 8,500 below the typical mileage for its age. Its asking price of £18,288 is £2,615 below the AskCar estimate of £20,903. The AskCar estimate uses 6,886 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 1 day ago. Its asking price has since fallen by £200. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by The Car Traders London in Romford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Good value: £2,615 (12%) under the AskCar estimate of £20,903.

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 6,886 priced BMW 3 Series adverts across different ages and specifications, as of 7 November 2026.

Time on sale

AskCar first saw this 2021 BMW 3 Series advertised 1 day ago. About half of 2021 BMW 3 Series cars are gone from sale within a month of being advertised: 436 of the 925 first advertised between 10 July 2026 and 4 October 2026.

Price history

AskCar first saw this advert on 6 November 2026 at £18,488. Its asking price is now £18,288, £200 less. The latest price cut was seen on 7 November 2026.

Price changes recorded:

• 6 November 2026: £18,488
• 7 November 2026: £18,288

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 19 March 2027.

It has had 3 MOTs. The latest, on 19 March 2026, passed.

Advisories at the latest test: TPMS on dashboard; offside rear inner tyre slightly damaged/cracking or perishing cracking; nearside rear inner tyre slightly damaged/cracking or perishing cracking.

Mileage at that test: 44,675 miles, which matches the advertised 46,653 miles.

Advertised mileage is about 8,500 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

59 other 2021 BMW 3 Series M Sport 2.0 diesel automatic saloons are for sale at UK dealers, from £12,700 to £25,495, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, grey. Mileage: 46,495 miles. Price: £25,495, £7,207 more than this car. Dealer: IH Performance in Sandy. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-2c8194d19255
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, grey. Mileage: 47,200 miles. Price: £19,990, £1,702 more than this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-eb2e5543ed6a
• 2021 BMW 3 Series M Sport, 2.0 diesel saloon, white. Mileage: 47,469 miles. Price: £22,495, £4,207 more than this car. Dealer: Kaz Executive Travel in Basildon. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-8eb97b842df9

• The nearest: 2021 BMW 3 Series M Sport, 2.0 diesel saloon, grey, under a mile from this car. Mileage: 63,000 miles. Price: £18,995, £707 more than this car. Dealer: House Of Motors in Romford. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-9b4e92fdc195