The 1999 Mercury Sable is available as a 4-door, 5-seat sedan. Starting at $18,540, the 1999 Mercury Sable GS Sedan is powered by a 3.0L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 28-mpg on the highway. The top of the line 1999 Mercury Sable LS Commercial Applications Wagon, priced at $20,740, is powered by a 3.0L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 27-mpg on the highway.