2018 BMW 3 Series

3.0 340i M Sport Auto RWD Euro 6 (s/s) 4dr (322 bhp)

£28,990

Above the going rate: £3,480 over the typical £25,510 for this model, age and mileage, drawing on 6,849 adverts of this make and model.

Overview

Make: BMW
Model: 3 Series
Trim: M SPORT
Version: 3.0 340i M Sport Auto RWD Euro 6 (s/s) 4dr (322 bhp)
Mileage: 26,000 miles
Year: 2018
Fuel type: Petrol
Body type: Saloon
Engine: 3.0 L
Gearbox: Automatic
Power: 322 bhp
Seats: 5
CO2: 159 g/km
Colour: Grey
Doors: 4
Driven wheels: Rear Wheel Drive
Engine badge: 340i
Emissions standard: Euro 6

About this car

This 2018 BMW 3 Series M Sport has covered 26,000 miles, around 47,900 fewer than typical for its age. At £28,990, it is advertised £3,480 above our estimated market asking price of £25,510. To estimate its market asking price, we analyse UK dealer adverts for 6,849 BMW 3 Series cars across different ages and specifications. It first appeared in our advert records 96 days ago. The seller is Cheshire Performance, based in Audenshaw.

Stock data from 21 October 2026.

How we estimate prices and check cars

Price history

First seen on 18 July 2026, 96 days ago. Advert duration calculated on 22 October 2026.

Recorded asking prices
Date observed	Asking price
21 October 2026	£28,990

Price and mileage comparison

Estimated market asking price: £25,510. The asking price is £3,480 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 47,900 miles lower than typical for a 2018 BMW 3 Series.

17 other cars with the same year, trim, gearbox and fuel are for sale from £9,800 to £24,990.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£9,800	95,772 miles
£10,378	93,710 miles
£10,995	89,920 miles
£11,000	90,639 miles
£11,290	85,988 miles

These cars have covered 34,000–107,000 miles, compared with 26,000 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 · 2018 BMW 3 Series price guide

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Dealer

Cheshire Performance, Audenshaw. Across the dealer network: 139 cars for sale.

Dealer postcode: M34 5DR.

Dealer opening hours

Monday: 09:00-18:00
Tuesday: 09:00-18:00
Wednesday: 09:00-18:00
Thursday: 09:00-18:00
Friday: 09:00-18:00
Saturday: 09:00-17:00
Sunday: None