2021 BMW 3 Series

Overview

Make

BMW

Model

3 Series

Trim

M SPORT

Version

2.0 320i M Sport Auto 4WD Euro 6 4dr (181 bhp)

Mileage

78,590 miles

Year

2021

Fuel type

Petrol

Body type

Saloon

Engine

2.0 L

Gearbox

Automatic

Power

181 bhp

Seats

5

CO2

154 g/km

Colour

Black

Doors

4

Driven wheels

Four Wheel Drive

Engine badge

320i

Emissions standard

Euro 6

About this car

This 2021 BMW 3 Series M Sport has covered 78,590 miles, around 24,000 more than typical for its age. Our estimated market asking price is £17,118. This car is advertised at £17,995, which is £877 above that figure. The estimate uses 6,849 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 85 days ago, the asking price has dropped by £1,000. It may give you a starting point for a conversation about price. Its MOT is recorded as valid until 27 November 2026. The advertised mileage is consistent with the latest MOT reading. It is for sale at OC Davies & Son in Carmarthen.

Stock data from 21 October 2026.

How we estimate prices and check cars

Price and mileage comparison

Estimated market asking price: £17,118. The asking price is £877 above 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 6,849 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 24,000 miles higher than typical for a 2021 BMW 3 Series.

The advertised mileage is consistent with the last MOT reading.