AUBURN HILLS, MI – The A5 is built on a new structure that also forms the basis for the next generation A4 sedan. A distinctive shape identifies the A5 and S5 models from virtually any angle, with flowing curves bringing some musculature to Audi’s sleek, aerodynamic forms, and arresting light patterns. From behind, there’s slight chance of mistaking it for a British GT car, but from any other angle it’s unmistakably Audi, according to

The 2008 Audi A5 ($39,900) features a 265-hp V-6 engine, six-speed manual gearbox, and quattro all-wheel drive. The 2008 Audi S5 ($50,500) uses a 354-hp V-8 engine. Both versions will be available with a six-speed automatic transmission ($1,300).

A5 comes standard with leather upholstery, including the steering wheel and shifter and wood trim (walnut, nutmeg, or ash). Also standard are three-zone climate control, power front seats, 60/40 split-fold rear seat with ski bag/pass-through, tilt/telescoping steering column, glass roof with shade, four-way adjustable center console, monochrome driver info center, AM/FM/CD/satellite/SD-card 180-watt 10-speaker stereo, fog lights, 18-inch wheels, heated windshield washers, cruise control, power windows/locks/mirrors, and rain-sensing wipers.

A5 options include an S-line package with firmer suspension, 19-inch wheels, different trim in and out and sport seats, two-position driver memory system, power folding mirrors, LED daytime running lights, bi-Xenon headlights with washers, heated front seats, Milano leather upgrade, and aluminum trim.

Optional on both A5 and S5 are metallic paint, adaptive headlamps, advanced key (stays in your pocket), Audi side assist, navigation, and a Bang & Olufsen sound system.

S5 includes everything on the A5 plus 19-inch wheels and 255/35YR19 tires, bigger brakes, rear spoiler, Silk Nappa leather sport seats with integral headrests and optional Alcantara inserts, two-position driver memory system, color screen driver info center, bi-Xenon headlamps and LED daytime running lights, auto-dimming power-folding mirrors, headlight washers, heated front seats, and aluminum interior trim with carbon, wood, or stainless steel available. The S5 manual transmission model carries the mandated U.S. gas guzzler tax ($1,300).

Safety gear that comes standard on all A5 and S5 models includes of two-stage driver and adaptive passenger frontal airbags, front side-impact airbags, side curtain airbags, Backguard headrests, electronic stability control, ABS, EBD, all-wheel drive, and tire pressure monitors.