2021 BMW 3 Series

2.0 318i M Sport Auto RWD Euro 6 (s/s) 4dr (154 bhp)

£18,250

Fair price: within 8% of the typical £18,619 for this model, age and mileage, drawing on 6,886 adverts of this make and model.

Overview

Make
BMW
Model
3 Series
Trim
M SPORT
Version
2.0 318i M Sport Auto RWD Euro 6 (s/s) 4dr (154 bhp)
Mileage
56,083 miles
Year
2021
Fuel type
Petrol
Body type
Saloon
Engine
2.0 L
Gearbox
Automatic
Power
154 bhp
Seats
5
CO2
146 g/km
Colour
White
Doors
4
Driven wheels
Rear Wheel Drive
Engine badge
318i
Emissions standard
Euro 6

About this car

This 2021 BMW 3 Series M Sport is advertised with 56,083 miles on the clock. The dealer is asking £18,250, which is £369 below our market estimate of £18,619. To estimate its market asking price, we analyse UK dealer adverts for 6,886 BMW 3 Series cars across different ages and specifications. We first recorded this advert 95 days ago, and its asking price has since fallen by £745. The time on sale and price change could be useful context when negotiating. Its recorded MOT is valid until 1 March 2027, and its advertised mileage is consistent with the latest MOT reading. It is for sale at Sandhaven Car Sales in Durham.

Stock data from 22 October 2026.

How we estimate prices and check cars

Price history

First seen on 20 July 2026, 95 days ago. Advert duration calculated on 23 October 2026. Net asking-price reduction: £745 from the first recorded £18,995. 2 price reductions recorded, the latest observed on 18 September 2026.

Recorded asking prices
Date observedAsking price
21 July 2026£18,995
16 August 2026£18,250
2 September 2026£20,250
18 September 2026£18,250
22 October 2026£18,250

Price and mileage comparison

Estimated market asking price: £18,619. The asking price is £369 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 1,400 miles higher than typical for a 2021 BMW 3 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 1 March 2027. 53,474 miles at the last test.

178 other cars with the same year, trim, gearbox and fuel are for sale from £14,000 to £29,990.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£14,000110,887 miles
£14,00093,863 miles
£14,33588,796 miles
£14,89593,000 miles
£14,99587,565 miles

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