2021 BMW 3 Series

3.0 M340i MHT Auto 4WD Euro 6 (s/s) 4dr (369 bhp)

£28,488

Fair price: within 8% of the typical £30,146 for this model, age and mileage, drawing on 6,724 adverts of this make and model.

Overview

Make
BMW
Model
3 Series
Version
3.0 M340i MHT Auto 4WD Euro 6 (s/s) 4dr (369 bhp)
Mileage
55,663 miles
Year
2021
Fuel type
Petrol Hybrid
Body type
Saloon
Engine
3.0 L
Gearbox
Automatic
Power
369 bhp
Seats
5
CO2
176 g/km
Colour
Grey
Doors
4
Driven wheels
Four Wheel Drive
Engine badge
M340i; MHT
Hybrid type
Mild hybrid
Emissions standard
Euro 6

About this car

This 2021 BMW 3 Series has covered 55,663 miles. Its asking price of £28,488 is £1,658 below our estimate of £30,146. To estimate its market asking price, we analyse UK dealer adverts for 6,724 BMW 3 Series cars across different ages and specifications. The asking price is now £1,000 lower than when we first recorded the advert 39 days ago. Its recorded MOT is valid until 27 June 2027, and its advertised mileage is consistent with the latest MOT reading. It is advertised by Junction 17 Cars Peterborough in Yaxley.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 15 September 2026, 39 days ago. Advert duration calculated on 24 October 2026. Net asking-price reduction: £1,000 from the first recorded £29,488. 1 price reduction recorded, the latest observed on 23 October 2026.

Recorded asking prices
Date observedAsking price
15 September 2026£29,488
23 October 2026£28,488

Price and mileage comparison

Estimated market asking price: £30,146. The asking price is £1,658 below this estimate.

The estimate uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It estimates an advertised price, not a confirmed sale price.

The pricing calculation includes 6,724 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 1,000 miles higher than typical for a 2021 BMW 3 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 27 June 2027. 52,975 miles at the last test.

58 other cars with the same year, trim, gearbox and fuel are for sale from £25,475 to £45,000.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£25,47589,162 miles
£25,99037,000 miles
£25,99584,000 miles
£26,44963,729 miles
£26,49573,000 miles

These cars have covered 6,593–89,162 miles, compared with 55,663 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. Our estimate adjusts for these differences using the wider market data.

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

How to contact the dealer, its opening hours and the cheaper cars like this one are on this AskCar page.

Vehicle photos

AskCar lists 589,789 cars from 13,079 UK dealer locations, read and updated daily from dealer websites. More than any other UK site. No dealer pays to be listed.