2018 Smart forfour 0.9 PRIME SPORT PREMIUM

Overview

• Make: Smart
• Model: forfour
• Trim: Prime Sport Premium
• Version: 0.9 T Prime Sport Premium Auto RWD Euro 6 (s/s) 5dr Twinamic (89 bhp)
• Year: 2018
• Mileage: 42,236 miles
• Fuel: Petrol
• Body: Hatchback, 5 doors, 4 seats
• Engine: 0.9 litres, 89 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 98 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 42,236 miles on the clock, this 2018 Smart forfour Prime Sport Premium has done roughly 4,700 more miles than a typical 2018 Smart forfour. The AskCar estimate for this car is £8,571. It is priced at £8,250, which is £321 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 246 Smart forfour cars across different ages and specifications. The dealer may accept less. This car has been on sale for at least 90 days, and its asking price is down £637. Its advertised mileage matches the government's MOT record. It is for sale at The Car Traders London in Romford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £321 (3%) under the AskCar estimate of £8,571.

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

It draws on 246 priced Smart forfour adverts across different ages and specifications, as of 2 November 2026.

A 2018 Smart forfour with the 0.9 petrol engine is typically advertised at £8,800: the median of the 20 for sale on AskCar, as of 2 November 2026.

Time on sale

The dealer may accept less. This 2018 Smart forfour has been on sale for at least 90 days, and its asking price has been cut by £637. About 6 in 10 of 2018 Smart forfour cars are gone from sale within a month of being advertised: 32 of the 53 first advertised between 13 July 2026 and 29 September 2026.

Price history

AskCar first saw this advert on 4 August 2026 at £8,887. Its asking price is now £8,250, £637 less. The latest price cut was seen on 2 November 2026.

Price changes recorded:

• 5 August 2026: £8,887
• 11 August 2026: £8,587
• 19 August 2026: £8,787
• 21 August 2026: £8,487
• 27 August 2026: £8,388
• 10 September 2026: £7,988
• 23 September 2026: £8,188
• 29 September 2026: £7,988
• 6 October 2026: £8,288
• 20 October 2026: £7,988
• 1 November 2026: £8,310
• 2 November 2026: £8,250

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 6 November 2026.

It failed its MOT on 6 November 2025 (front windscreen wiper does not clear the windscreen effectively) and passed 1 day later, on 7 November 2025.

Advisories at the latest test: oil leak, but not excessive multiple engine oil leaks.

Mileage at that test: 38,373 miles, which matches the advertised 42,236 miles.

Advertised mileage is about 4,700 miles higher than the median mileage of a 2018 Smart forfour on AskCar.

Similar cars

5 other 2018 Smart forfour Prime Sport Premium 0.9 petrol automatic hatchbacks are for sale at UK dealers, from £7,995 to £10,499, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 Smart forfour Prime Sport Premium, 0.9 petrol hatchback, silver. Mileage: 45,000 miles. Price: £8,750, £500 more than this car. Dealer: BM Vehicles in Ware. AskCar page: https://askcar.co.uk/car/smart-forfour-2018-13dd3374f643
• 2018 Smart forfour Prime Sport Premium, 0.9 petrol hatchback, black. Mileage: 46,000 miles. Price: £7,995, £255 less than this car. Dealer: Walker Car Sales Retail in Portsmouth. AskCar page: https://askcar.co.uk/car/smart-forfour-2018-104181fd9537
• 2018 Smart forfour Prime Sport Premium, 0.9 petrol hatchback, black. Mileage: 36,850 miles. Price: £9,495, £1,245 more than this car. Dealer: Benedicts Of Bristol in Bristol. AskCar page: https://askcar.co.uk/car/smart-forfour-2018-9a88e064bdf1

• The nearest: 2018 Smart forfour Prime Sport Premium, 0.9 petrol hatchback, orange, 17 miles from this car. Mileage: 14,433 miles. Price: £10,499, £2,249 more than this car. Dealer: Red Lion Motors in Chelmsford. AskCar page: https://askcar.co.uk/car/smart-forfour-2018-c7bd20bb9f13