2021 BMW 3 Series 3.0 M340i MHT
Price: £33,490. Fair price: £321 (under 1%) under the AskCar estimate of £33,811, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,886 priced BMW 3 Series adverts on AskCar as of 7 November 2026.
AskCar lists 7,202 used BMW 3 Series from 2,724 UK dealerships, as of 7 November 2026.
Overview
- Make: BMW
- Model: 3 Series
- Version: 3.0 M340i MHT Auto 4WD Euro 6 (s/s) 4dr (369 bhp)
- Year: 2021
- Mileage: 33,989 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
This 2021 BMW 3 Series is advertised with 33,989 miles, approximately 21,200 below the typical mileage for its age. Its asking price of £33,490 is £321 below the AskCar estimate of £33,811. The AskCar estimate uses UK dealer asking prices, including 6,886 BMW 3 Series adverts, and accounts for the car’s age, mileage and specification. We first recorded this car for sale 38 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Walkers Of Selby, based in Selby. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 7 November 2026.
Price
Fair price: £321 (under 1%) under the AskCar estimate of £33,811.
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.
A 2021 BMW 3 Series with the 3.0 petrol engine is typically advertised at £28,300: the median of the 148 for sale on AskCar, as of 7 November 2026.
Time on sale
This 2021 BMW 3 Series has been on sale for at least 38 days.
Price history
AskCar first saw this advert on 30 September 2026 at £33,490. 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 7 November 2026: valid until 1 August 2027.
It has had 3 MOTs. The latest, on 13 July 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 32,239 miles, which matches the advertised 33,989 miles.
Advertised mileage is about 21,200 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.
Browse all BMW 3 Series cars for sale · 2021 BMW 3 Series price guide
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Photos
60 photos of this car are on its AskCar page.
As of 7 November 2026, AskCar lists 601,018 cars and vans from 12,892 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.