Audi S8 Starting MSRP: $92,000 Five-year cost of ownership: $136,368 Audi is the only brand with vehicles in both the top and bottom 10 for cost of ownership. The large, fast, technology-laden S8 makes the most expensive list mostly because of high depreciation
The Audi S8 is this German automaker's flagship performance sedan. Debuting at the start of the new millennium, it was the third vehicle for the North American market to bear an "S" badge. Used to showcase Audi's performance engineering, S- and RS-badged vehicles compete directly against other automakers' performance models from divisions like BMW's M and Mercedes-Benz's AMG. As a high-luxury, high-performance and high-tech platform, the S8 is the standard-bearer in Audi's arsenal.

There are two generations of the Audi S8 and each has been based on the A8 luxury sedan from the same time period. Building on the A8's lightweight aluminum-frame chassis, the S8 adds a more powerful engine, a sport-tuned suspension, more powerful brakes and a slightly more aggressive look. Despite being Audi's largest sedan, the combination of a relatively light curb weight, muscular power and the tenacious grip of the car's standard Quattro all-wheel-drive system make it surprisingly quick and agile. Audi's Quattro system is a key advantage over the S8's competitors as it provides more traction, especially in inclement weather conditions.

Audi made sure that luxury amenities were not sacrificed for the sake of outright speed. A premium leather-trimmed interior, real wood accents and exemplary fit and finish complement both S8 models, as do a full bevy of safety features. If there's a fault to the Audi S8, it's probably that it doesn't quite match the performance potential of some competing sedans. Our editors have described it as an impressive luxury sedan first and a performance sedan second. But for those needing AWD security or simply desiring a fast, stealthy and relatively rare luxury sedan, either S8 generation will do nicely.

Current Audi S8