German luxury car brand Audi presses into 1999 with three vehicles models offered in numerous variations. For 1999, the Audi A4 Avant wagon can now be equipped with the sedan's base 1.8-liter turbocharged engine. Quattro all-wheel drive is standard equipment on the 1999 A4 Avant. Completely redesigned last year, the 1999 Audi A6 receives minor equipment changes for the 1999. HomeLink transmitter, rear heated seats and a sport suspension are now found on the 1999 model year A6. Found on both the Audi A4 and Audi A6 for 1999 are a first-aid kit. Audi has dropped their aging Cabriolet model for the 1999 model year.