2023 BMW 3 Series 3.0 M340d MHT

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

Price: £29,475. Above the going rate: £2,676 (9%) over the AskCar estimate of £26,799, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,706 priced BMW 3 Series adverts on AskCar as of 30 October 2026.

AskCar lists 6,987 used BMW 3 Series from 2,629 UK dealerships, as of 30 October 2026.

Overview

Make
BMW
Model
3 Series
Version
3.0 M340d MHT Auto 4WD Euro 6 (s/s) 4dr (335 bhp)
Mileage
84,955 miles
Year
2023
Fuel type
Diesel
Body type
Saloon
Engine
3.0 L
Gearbox
Automatic
Power
335 bhp
Seats
5
CO2
159 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

This 2023 BMW 3 Series has covered 84,955 miles, around 50,300 more miles than is typical for its age. The AskCar estimate for this car is £26,799. It is priced at £29,475, which is £2,676 above that estimate. The AskCar estimate uses 6,706 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. It first appeared in our advert records today. Its recorded MOT is valid until 30 January 2027, and its advertised mileage is consistent with the latest MOT reading. The seller is Group 1 Borehamwood BMW, based in Borehamwood.

Stock data as of 30 October 2026.

How we estimate prices and check cars

Price history

AskCar first saw this advert on 30 October 2026.

Recorded asking prices
Date observedAsking price
30 October 2026£29,475

Price and mileage comparison

Above the going rate: £2,676 (9%) over the AskCar estimate of £26,799.

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 6,706 priced BMW 3 Series adverts across different ages and specifications, as of 30 October 2026.

Advertised mileage is about 50,300 miles higher than the median mileage of a 2023 BMW 3 Series on AskCar.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT: valid until 30 January 2027. 66,216 miles at the last test.

Other matching cars

40 other 2023 BMW 3 Series automatic diesel cars are for sale at UK dealers from £25,200 to £46,950, as of 30 October 2026.

The 5 cheapest:

The 40 matching cars have covered 14,902 to 90,000 miles, compared with 84,955 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 · 2023 BMW 3 Series price guide

More like this

Photos

1 photo of this car is on its AskCar page.

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

As of 30 October 2026, AskCar lists 580,490 cars and vans from 12,695 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.