The 2006 Buick Rendezvous is available as a 4-door, 5-seat sport utility. Starting at $27,780, the 2006 Buick Rendezvous CX AWD is powered by a 3.5L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 18-mpg in the city and 23-mpg on the highway. The top of the line 2006BuickRendezvousCXL AWD , priced at $ 27,780 , is powered by a 3.5L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 18-mpg in the city and 23-mpg on the highway.