According to edmunds, The Audi A4 has a few new powertrain options this year for the V6. Specifically, the V6 can now be equipped with a six-speed manual on all-wheel-drive sedans and wagons. The V6 can also be ordered this year for a front-drive A4 sedan with the continuously variable transmission (CVT). The only other significant change this year is the "S-line" name for the sport package.
When the Audi A4 debuted in the United States in 1996, it set forth the revitalization of the Audi brand. We've been impressed by the A4 since that time and have always considered it one of the most well-appointed and fun-to-drive cars in its price class. But seven years is a long time for a car in the entry-level luxury car market, so Audi completely redesigned the A4 for the 2002 model year. The new sedan, followed later by the wagon (or Avant in Audi terminology) and convertible (or Cabriolet), was more sharply styled than before, with clear glass headlights, dual exhaust and a high waistline. Although the convertible's clean expression speaks proudly of its fellow A4s, the Cab's sleeker profile and prominent aluminum accents give it an even sharper bite.
Original 2005 Audi A4 Owners Manual