The 2006 Toyota 4Runner is available as a 4-door, 5-seat sport utility. Starting at $36,625, the 2006 Toyota 4Runner Limited V6 4x4 is powered by a 4.0L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 17-mpg in the city and 21-mpg on the highway. The top of the line 2006 Toyota 4Runner SR5 V8 4x2, priced at $29,650, is powered by a 4.7L, 8-cylinder engine mated to an automatic transmission that returns an EPA estimated 17-mpg in the city and 20-mpg on the highway.