In both the Fortwo and Forfour, two engines are available, both rear-mounted and driving the rear axle. The powerplants are Renault sourced, as the French firm’s new Twingo is derived from the same technical underpinnings as the Forfour.
The base unit is a 999cc, three-cylinder naturally aspirated petrol engine. It produces maximum power of 70bhp at 6000rpm and peak torque of 67lb ft at 2850rpm.
Equipped with this engine, the Smart Fortwo can accelerate from 0-62mph in 14.4sec and hit a top speed of 94mph. Smart claims fuel economy of 68.9mpg and CO2 emissions of 93g/km.
The more powerful engine is a turbocharged 898cc, three-cylinder unit that develops 89bhp at 5500rpm and 100lb ft of torque at 2500rpm. Combined economy for the Smart Fortwo with this powerplant is put at 67.3mpg and 97g/km of CO2. It can cover the 0-62mph sprint in 10.4sec and reach 96mph.
The Smart Forfour weighs 95kg more than its compact sibling. Equipped with the naturally aspirated engine, the four-seater can achieve 67.3mpg on the combined cycle and emits 97g/km of CO2. From rest, it accelerates to 62mph in 15.9sec on its way to a top speed of 94mph.
The Forfour includes rear doors that open to an 85-degree angle, a rear bench that folds flat into the floor, leaving a 975-litre load space and the ability to carry items measuring up to 2.2-metres in length.
The third-generation city car is available in three trim levels, named Passion, Prime and Proxy.
Prices for the Smart Fortwo Passion start at £11,125. Kit includes 15-inch alloy wheels, automatic climate control, a multifunction leather steering wheel, 3.5-inch TFT colour screen, Isofix points and cruise control.
The Prime trim level, which costs £11,820, gets uprated 15-inch bi-colour alloys, a panoramic glass roof, additional dashboard instrument pods, a textured black fabric dashboard and heated leather seats.
The Proxy variant also costs £11,820. It substitutes the heated leather seats of the Prime trim for cloth and leather Artico versions, but gains black 16-inch wheels, a chrome exhaust finisher, alloy pedals and a sports steering wheel trimmed in perforated leather.
The trim levels are broadly similar on the Forfour, although the Proxy Forfour gets sports suspension and a 10mm lower ride height.
Eight exterior colours are available for the Fortwo, and nine for the Forfour. Each model is available with a choice of three contrasting colours for the exposed elements of the ‘tridion’ safety cell and three shades for the front grille.
A company spokesman said the lower-powered versions of each car are expected to account for the greatest sales volumes, and the small price premium between the two- and four-seat versions is expected to encourage most buyers towards the Forfour.
From February 2015, both Smarts will be available with a five-speed manual gearbox, with a twin-clutch DCT transmission option to follow in the second quarter of the year. This system will command a premium of £995 over the manual-equipped equivalents.
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