2021 BMW 3 Series 3.0 M340i MHT

Overview

• Make: BMW
• Model: 3 Series
• Version: 3.0 M340i MHT Auto 4WD Euro 6 (s/s) 4dr (369 bhp)
• Year: 2021
• Mileage: 50,609 miles
• Fuel: Petrol, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 369 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Blue
• CO2: 176 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 50,609 miles on the clock, this 2021 BMW 3 Series has done roughly 4,200 fewer miles than a typical 2021 BMW 3 Series. Its asking price of £29,250 is £1,473 below the AskCar estimate of £30,723. The AskCar estimate uses 6,822 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 40 days ago. Its asking price has since fallen by £1,899. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Prestige Cars Kent in Orpington. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 8 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,473 (4%) under the AskCar estimate of £30,723.

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 6,822 priced BMW 3 Series adverts across different ages and specifications, as of 8 November 2026.

A 2021 BMW 3 Series with the 3.0 petrol engine is typically advertised at £28,400: the median of the 146 for sale on AskCar, as of 8 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 40 days.

Price history

AskCar first saw this advert on 29 September 2026 at £31,149. Its asking price is now £29,250, £1,899 less. The latest price cut was seen on 7 November 2026.

Price changes recorded:

• 29 September 2026: £31,149
• 8 October 2026: £31,021
• 15 October 2026: £30,830
• 20 October 2026: £30,644
• 24 October 2026: £30,324
• 29 October 2026: £30,161
• 31 October 2026: £29,840
• 3 November 2026: £29,600
• 7 November 2026: £29,250

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 8 November 2026: valid until 1 August 2027.

It has had 4 MOTs. The latest, on 23 July 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 49,015 miles, which matches the advertised 50,609 miles.

Advertised mileage is about 4,200 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.