2021 BMW 3 Series

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

£36,990

Fair price: within 8% of the typical £36,992 for this model, age and mileage, drawing on 6,886 adverts of this make and model.

Overview

Make: BMW
Model: 3 Series
Version: 3.0 M340i Auto 4WD Euro 6 (s/s) 4dr (369 bhp)
Mileage: 31,000 miles
Year: 2021
Fuel type: Petrol
Body type: Saloon
Engine: 3.0 L
Gearbox: Automatic
Power: 369 bhp
Seats: 5
CO2: 187 g/km
Colour: Grey
Doors: 4
Driven wheels: Four Wheel Drive
Emissions standard: Euro 6

About this car

At 31,000 miles, this 2021 BMW 3 Series has covered about 23,700 fewer miles than other 2021 BMW 3 Series cars. The dealer is asking £36,990, which is £2 below our market estimate of £36,992. Our estimate draws on 6,886 BMW 3 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. It first appeared in our advert records 13 days ago. MOT records show an expiry date of 8 September 2027, and the latest recorded mileage is consistent with the advert. It is advertised by Benz Bavarian in Derby.

Stock data from 22 October 2026.

How we estimate prices and check cars

Price history

First seen on 10 October 2026, 13 days ago. Advert duration calculated on 23 October 2026.

Recorded asking prices
Date observed	Asking price
10 October 2026	£36,990
22 October 2026	£36,990

Price and mileage comparison

Estimated market asking price: £36,992. The asking price is £2 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 6,886 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 23,700 miles lower than typical for a 2021 BMW 3 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 8 September 2027. 31,344 miles at the last test.

1 other cars with the same year, trim, gearbox and fuel are for sale from £22,000 to £22,000.

Other matching cars
Asking price	Mileage
£22,000	20,300 miles

These cars have covered 20,300 miles, compared with 31,000 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

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Vehicle photos

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