The 2006 Cadillac DTS is available as a 4-door, 5-seat sedan. Starting at $00, the 2006 Cadillac DTS Base is powered by a 4.6L, 8-cylinder engine mated to an automatic transmission that returns an EPA estimated 17-mpg in the city and 25-mpg on the highway. The top of the line 2006 Cadillac DTS Funeral Coach, priced at $42,095, is powered by a 4.6L, 8-cylinder engine mated to an automatic transmission that returns an EPA estimated 14-mpg in the city and 20-mpg on the highway.