Alfa Romeo unveiled the all new 4C Spider today, during Detroit Motor Show, the most important auto event in North America. The car was anticipated by a concept with the same name in March 2014, during Geneva Motor Show.
Inspired by the 33 Stradale, the all-new Alfa Romeo 4C Spider uses the same carbon fiber monocoque chassis and all-aluminum 1750 cc turbocharged, direct-injected engine. The body of the convertible was updated with three functional heat extractors and an aerodynamically tuned spoiler, round rear LED illuminated taillamps and an Akrapovic dual-mode center-mounted performance exhaust system.
Seven exterior colors are available for the 4C Spider, and include: Rosso Alfa (Red), Black, White, Basalt Grey Metallic, Rosso Competizione Tri-coat, Madreperla White Tri-coat and all-new Giallo (yellow).
The Alfa Romeo 4C Spider features two composite-framed sport seats with standard leather and an exposed carbon fiber monocoque, leather performance steering wheel with paddle-shifters and aluminum pedals. New to the Alfa Romeo 4C lineup is the addition of an Alpine premium radio. 
Under the hood we have the all-aluminum 1750 cc turbocharged engine with direct injection, delivering 237 horsepower, with a peak of 258 ft-lb (350 Nm), 80 percent of which is available at only 1,700 rpm.
With a top speed of 160 miles per hour (257 km/h), 0-to-60 mph (96 km/h) acceleration blasts in an estimated 4.1-seconds, 1.1 g of lateral acceleration and 1.25 g of maximum braking deceleration, Alfa Romeo 4C Spider will remain a true sports car as its coupe brother.