2021 BMW 3 Series 3.0 330d MHT M Sport

Overview

• Make: BMW
• Model: 3 Series
• Trim: M Sport
• Version: 3.0 330d MHT M Sport [Tech/Pro Pack] Auto RWD Euro 6 4dr Step (281 bhp)
• Year: 2021
• Mileage: 90,414 miles
• Fuel: Diesel, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 281 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 131 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series M Sport is advertised with 90,414 miles, approximately 35,300 above the typical mileage for its age. Its asking price of £17,700 is £174 below the AskCar estimate of £17,874. The AskCar estimate uses 6,902 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. We have tracked this advert today. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Marshall SKODA Milton Keynes, based in Milton Keynes. 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: £174 (under 1%) under the AskCar estimate of £17,874.

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.

A 2021 BMW 3 Series with the 3.0 diesel engine is typically advertised at £28,500: the median of the 146 for sale on AskCar, 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 £17,700. 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 14 January 2027.

It has had 3 MOTs. The latest, on 8 January 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 80,236 miles, which matches the advertised 90,414 miles.

Advertised mileage is about 35,300 miles higher than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

9 other 2021 BMW 3 Series M Sport 3.0 diesel automatic saloons are for sale at UK dealers, from £22,990 to £26,250, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 3.0 diesel saloon, grey. Mileage: 77,786 miles. Price: £23,495, £5,795 more than this car. Dealer: Top Cars Telford in Dawley. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-3c9d9b22a88e
• 2021 BMW 3 Series M Sport, 3.0 diesel saloon, white. Mileage: 72,000 miles. Price: £23,950, £6,250 more than this car. Dealer: M J Motors in Belfast. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-2bcedfdd0e76
• 2021 BMW 3 Series M Sport, 3.0 diesel saloon, white. Mileage: 65,524 miles. Price: £23,995, £6,295 more than this car. Dealer: Hartlepool Motor Company in Hartlepool. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-b630305b899f

• The nearest: 2021 BMW 3 Series M Sport, 3.0 diesel saloon, white, 29 miles from this car. Mileage: 40,824 miles. Price: £25,250, £7,550 more than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-69301e6eecfa