2021 BMW 3 Series 3.0 M340i MHT
Price: £27,990. Good value: £2,565 (8%) under the AskCar estimate of £30,555, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,897 priced BMW 3 Series adverts on AskCar as of 5 November 2026.
AskCar lists 7,194 used BMW 3 Series from 2,714 UK dealerships, as of 5 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: 52,810 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 52,810 miles on the clock, this 2021 BMW 3 Series has done roughly 2,000 fewer miles than a typical 2021 BMW 3 Series. The dealer is asking £27,990, which is £2,565 below the AskCar estimate of £30,555. To work out the AskCar estimate, we analyse UK dealer adverts for 6,897 BMW 3 Series cars across different ages and specifications. It first appeared in our advert records 46 days ago. We checked its advertised mileage against the government's MOT record, and they match. The seller is Trade Right Cars Cardiff, based in Cardiff. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 5 November 2026.
Price
Good value: £2,565 (8%) under the AskCar estimate of £30,555.
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 petrol 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 46 days.
Price history
AskCar first saw this advert on 20 September 2026 at £27,990. 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 5 November 2026: valid until 19 March 2027.
It has had 5 MOTs. The latest, on 11 March 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 48,890 miles, which matches the advertised 52,810 miles.
Advertised mileage is about 2,000 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
83 photos of this car are on its AskCar page.
As of 5 November 2026, AskCar lists 595,776 cars and vans from 12,945 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.