Hatching a trunk
Known simply as the A3 concept, the fastest ever factory-produced A3 is the latest in a long line of one-off Audi design studies, and is characteristically laden with technological advances in everything from construction to infotainment. Apart from the tautly contoured new body shell, the most immediately obvious highlight of the A3 concept is its five-cylinder Turbo FSI petrol engine, whose 408 hp output outnumbers its closest series production relative, the potent RS 3 Sportback, by 68 hp. The peak torque of 500 Nm is available over a broad rev range between 1,600 and 5,300 rpm, making an explosive 4.1-second 0-100 km/h time a reality. Top speed is electronically limited to 155mph.