2021 BMW 3 Series 3.0 M340d MHT

Version: 3.0 M340d MHT Auto 4WD Euro 6 (s/s) 4dr (335 bhp)

Price: £27,880. Above the going rate: £2,839 (11%) over the AskCar estimate of £25,041, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,692 priced BMW 3 Series adverts on AskCar as of 29 October 2026.

AskCar lists 7,078 used BMW 3 Series from 2,699 UK dealerships, as of 29 October 2026.

Overview

Make
BMW
Model
3 Series
Version
3.0 M340d MHT Auto 4WD Euro 6 (s/s) 4dr (335 bhp)
Mileage
69,000 miles
Year
2021
Fuel type
Diesel
Body type
Saloon
Engine
3.0 L
Gearbox
Automatic
Power
335 bhp
Seats
5
CO2
160 g/km
Colour
Blue
Doors
4
Driven wheels
Four Wheel Drive
Engine badge
M340d; MHT
Hybrid type
Mild hybrid
Emissions standard
Euro 6

About this car

With 69,000 miles on the clock, this 2021 BMW 3 Series has done roughly 14,300 more miles than a typical 2021 BMW 3 Series. Priced at £27,880, it is advertised £2,839 above the AskCar estimate of £25,041. The AskCar estimate draws on 6,692 BMW 3 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this car for sale today. Its MOT is recorded as valid until 15 November 2026. The advertised mileage is consistent with the latest MOT reading. It is advertised by Oakdene Collection in Alfreton.

Stock data as of 29 October 2026.

How we estimate prices and check cars

Price history

AskCar first saw this advert on 29 October 2026.

Recorded asking prices
Date observedAsking price
29 October 2026£27,880

Price and mileage comparison

Above the going rate: £2,839 (11%) over the AskCar estimate of £25,041.

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 6,692 priced BMW 3 Series adverts across different ages and specifications, as of 29 October 2026.

Advertised mileage is about 14,300 miles higher than the median mileage of a 2021 BMW 3 Series on AskCar.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT: valid until 15 November 2026. 63,209 miles at the last test.

Other matching cars

56 other 2021 BMW 3 Series automatic diesel cars are for sale at UK dealers from £19,995 to £36,500, as of 29 October 2026.

The 5 cheapest:

The 56 matching cars have covered 8,500 to 102,000 miles, compared with 69,000 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. The AskCar estimate adjusts for these differences.

Browse all BMW 3 Series cars for sale · 2021 BMW 3 Series price guide

More like this

Photos

51 photos of this car are on its AskCar page.

How to contact the dealer and its opening hours are on this AskCar page.

As of 29 October 2026, AskCar lists 587,923 cars and vans from 12,992 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.