Audi has followed last week's leaked pictures fiasco by releasing official photos and information on its new full-sized coupe, the A5, ahead of schedule.There hasn’t been a proper four-seat Audi coupe since 1988, but Audi has just rectified that situation with this car. And there hasn’t been a serious performance four-seat Audi coupe since the original Quattro turbo ended production in 1991 – but now there will be an S5, complete with the S4’s 4.2-litre V8. You can see pictures of both in our gallery. The A5 is the Audi that will transform the brand's reputation for mediocre handling – or at least that’s what the firm’s engineers, who have developed the new A5, are hoping. Underneath the A5 lies a chassis and an engineering principle that will be used on the next A4, A6 and A8. The key is the way Audi’s engineers have moved the front axle as far forward as possible and the engine and gearbox as far back into the car as possible. The system is called MDS and Audi will be hoping it will address some of the criticisms of its cars dynamic ability. Weight distribution is vital to the success of the MDS platform. The car’s front differential is located in front of the clutch and the steering rack is low down and as close to the front axle line as possible.