Proportions are classic coupe with minimal bodywork ahead of the front wheels, a substantial rear roof pillar, moderate trunk lid and a longer tail than snout. The door windows are frameless and visual strength is added by a central pillar that hides as a dark panel behind the rear side glass.

Out in the open the A5 appears larger than it really is; almost the same length as a BMW 3 Series coupe or a Mercedes CLK, which is narrower; the Audi is half a foot shorter than Jaguar's XK, BMW's 650 or Bentley's GTC and just half a foot longer than a 911, yet it comes across at least as spacious inside as any of those.

In terms of styling, the A5 is the cleanest, the S5 the most aggressive, and the A5 with S-line package splits the difference. The leading edges of the car are the inner points of the lower grilles that separate the central grille section from the lights and side grilles, much like the leading points of a manta ray. On the S5 aluminum-look trim is used at the lower edge of the grille, on the outside mirrors, and at the bottom of the rear bumper between the S-cue four exhaust outlets.

Bi-xenon headlamps give these cars that wild-animal-stalking-prey look. Crisp, white LED daytime running lamps run along the bottoms and outer edges of these headlamps, setting a higher standard for appearance and function; they can be turned off if you wish, automatically dim for use as parking lights, and are off on whichever side the turn signal is blinking for better vision of said signal. Most car companies could learn something from this design.

All wheels are five-spoke or a derivative, like the two-by-five propeller-blade shaped spokes on the S5 which use a fingered center cap to cover all the lug nuts.

The designer of the A5/S5, who may well be biased, calls the car the most beautiful he has ever designed. Maybe, or maybe not. But the A5 made it onto Hagerty's Hot List, so a leading insurer of collector cars believes the A5 may become more desirable over the next 20 years.