A3/S3: A new A3 sedan built on a platform shared with the seventh-gen VW Golf makes its debut this spring as a 2015 model.Sedan that is likely to be powered by a 140-hp 2.0-liter turbo-diesel and a 210-hp 2.0-liter gas engine.
A5: Coupes and cabriolets get the same uprated 220-hp version of Audi's 2.0-liter four-cylinder turbo.
A8: The A8 also gets the diesel treatment, courtesy of the aforementioned V-6. Available exclusively as a long-wheelbase model, the A8L TDI's fuel economy rings in at 24 mpg city and 36 highway.
R8: As predicted in this space last year, the 2015 R8 gets a mid-cycle revision with subtle exterior changes. Keeping the R8 fresh, however, is an optional S tronic dual-clutch automatic that replaces the clunky single-clutch R tronic transmission. The six-speed manual is still available. A new V-10 Plus model brings 550 horsepower (25 more than the standard V-10) and a track-firm suspension, helping the R8 encroach on Italian supercar territory