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 Auto 4WD Euro 6 (s/s) 4dr (282 bhp)
• Year: 2021
• Mileage: 34,405 miles
• Fuel: Diesel, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 282 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Blue
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 34,405 miles, this 2021 BMW 3 Series M Sport has covered about 20,400 fewer miles than other 2021 BMW 3 Series cars. The dealer is asking £23,850, which is £4,169 below the AskCar estimate of £28,019. To work out the AskCar estimate, we analyse UK dealer adverts for 6,897 BMW 3 Series cars across different ages and specifications. We first saw this car advertised 51 days ago. Its asking price has since fallen by £1,645. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Stoneacre Hull Mazda/Suzuki, based in Hull. 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

Good value: £4,169 (14%) under the AskCar estimate of £28,019.

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.

A 2021 BMW 3 Series with the 3.0 diesel engine is typically advertised at £28,500: the median of the 144 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 51 days.

Price history

AskCar first saw this advert on 15 September 2026 at £25,495. Its asking price is now £23,850, £1,645 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 15 September 2026: £25,495
• 25 September 2026: £25,395
• 22 October 2026: £24,995
• 29 October 2026: £23,995
• 3 November 2026: £23,850

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 22 May 2027.

It has had 6 MOTs. The latest, on 20 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 22,869 miles, which matches the advertised 34,405 miles.

Advertised mileage is about 20,400 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

7 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 5 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 3.0 diesel saloon, white. Mileage: 40,824 miles. Price: £25,250, £1,400 more than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-69301e6eecfa
• 2021 BMW 3 Series M Sport, 3.0 diesel saloon, grey. Mileage: 44,320 miles. Price: £26,250, £2,400 more than this car. Dealer: Sycamore BMW in Peterborough. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-c4b88d2d4c31
• 2021 BMW 3 Series M Sport, 3.0 diesel saloon, grey. Mileage: 52,500 miles. Price: £25,995, £2,145 more than this car. Dealer: RSK Cars in Wolverhampton. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-bdda4ae05d1b

• The nearest: 2021 BMW 3 Series M Sport, 3.0 diesel saloon, black, 73 miles from this car. Mileage: 56,200 miles. Price: £22,990, £860 less than this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-0b2ad93fecb7