The 2017 Smart Forfour is a rear-engined, rear-wheel-drive 5-door city car measuring 3.5 meters in length, offering agile urban handling and a tight turning circle. Key Specifications & Options Engine Options: 1.0-litre naturally aspirated petrol (71 bhp / 70 PS), emitting 94g/km CO2 with up to 67.3 mpg. 0.9-litre turbocharged petrol (89-90 bhp), emitting 99g/km CO2 with around 65.7 mpg. Electric Drive (17.6kWh battery), delivering roughly a 95-100 mile NEDC range. Transmissions: 5-speed manual . Practicality: Seats four passengers with compact dimensions, though rear space and boot capacity are tight and heated seats.