Most efficient production vehicles sold in the U.S.

Values are EPA highway and city combined miles per gallon.

1.) 2000-04 Honda Insight 5spd Heritage of Honda efficiency	65 mpg (62 city, 70 highway for 2000) (61 city, 68 highway for 2001-04)
2.) 1986-87 Chevy Sprint Er	57 mpg
3.) 1988 Chevy Sprint Metro HB	56 mpg
4.) 2001-04 Honda Insight CVT	56 mpg
5.) 2004 - ? Toyota Prius	55 mpg (60mpg highway, 51mpg city)
6.) 1990-94 Geo Metro XFI	55 mpg
7.) 1986-87 Honda Civic Coupe HF	54 mpg
8.) 1988-89 Honda Civic CRX HF	52 mpg
9.) 1992-95 Honda Civic HB VX	51 mpg
10.) 1990-91 Honda Civic CRX HF	50 mpg
11.) 1985 Chevy Sprint Read about it here	50 mpg
12.) 1985 Suzuki Sa310	50 mpg
13.) 2002-3 Honda Civic Hybrid 5 spd	49 mpg (46 city, 51 highway)
14.) 2000-03 Toyota Prius	49 mpg (52 city, 45 highway)
15.) 2002-4 Honda Civic Hybrid CVT	48 mpg (48 city, 47 highway)