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: 70,000 miles
• Fuel: Petrol, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 369 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 176 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW 3 Series has covered 70,000 miles. Its asking price of £25,220 is £1,758 below the AskCar estimate of £26,978. The AskCar estimate uses 6,902 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 1 day ago, the asking price has dropped by £1,035. The last MOT shows 76,614 miles, more than the advert. This is worth checking with the dealer. The latest recorded MOT expires on 26 September 2027. You can find this car at Hippo Approved in Blackburn. 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: £1,758 (6%) under the AskCar estimate of £26,978.

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 petrol 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 1 day ago. 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 5 November 2026 at £26,255. Its asking price is now £25,220, £1,035 less. The latest price cut was seen on 6 November 2026.

Price changes recorded:

• 5 November 2026: £26,255
• 6 November 2026: £25,220

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 26 September 2027.

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

Advisories at the latest test: rear brake pad(s) wearing thin; rear brake disc worn, pitted or scored, but not seriously weakened.

Mileage at that test: 76,614 miles. The advert says 70,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 14,900 miles higher than the median mileage of a 2021 BMW 3 Series on AskCar.