Alfa Romeo 4C Spider is ready for open-top driving, debuts in Detroit

Alfa Romeo has unveiled the production version of the 4C Spider at the Detroit Auto Show.

The car unveiled in Detroit is the U.S. market version, though European model is likely very similar, with just some minor changes to meet different safety requirements.

The Spider version of the 4C features a new unilateral carbon fibre windscreen frame that is adhered and bolted to the monocoque chassis, a specially-contoured aluminium rollover bar underneath the “halo” which provides mounting points for the new rear deck-lid, unique upper body brackets and a high-strength steel engine compartment cross beam to maximise torsional rigidity.

Visually the biggest difference in addition to a new rear deck-lid is the new removable and stowable cloth roof and an optional exposed carbon fibre hardtop. There are also new headlights, functional heat extractors, aero-optimised spoiler and LED taillights.

Other visual updates include new alloy wheel design, new yellow colour and all-new optional Akrapovic dual-mode exhaust system.

The 4C Spider’s windscreen and side windows have been optimised for lightness, using 10 percent thinner glass to reduce weight by up to 15 percent. Tthe weight difference between the Coupé and Spider versions of the U.S.-market models is just 10kg.

Power continues to come from the same 237bhp 1.75-litre four-cylinder turbocharged petrol engine linked to a twin-clutch gearbox with steering wheel-mounted paddle shifters, taking it from 0-60mph in 4.1 seconds on to a top speed of 160mph.

EU spec model is expected to debut in March at the Geneva Motor Show. The 4C Spider will go on sale in the UK in the summer, with prices and final specifications announced closer to that time.

2015 Alfa Romeo 4C Spider yellow

2015 Alfa Romeo 4C Spider white front 2

2015 Alfa Romeo 4C Spider white top

2015 Alfa Romeo 4C Spider white front

2015 Alfa Romeo 4C Spider white rear

2015 Alfa Romeo 4C Spider white

2015 Alfa Romeo 4C Spider rear

 

2015 Alfa Romeo 4C Spider


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