This example shows an extract of all EPA data for the Honda Insight.
Fuel efficiency varies by model-year, and whether the transmission is manual or automatic.
To keep it simple, we have only kept the most efficient configuration as an indicator of the relative model efficiency.
Please check the EPA web site for a specific vehicle's MPG.

EPA data:

YearMfrCarTransmissionCityHighwayCombined
2000HONDAINSIGHTManual(M5)617065
2001HONDAINSIGHTManual(M5)616864
2002HONDAINSIGHTManual(M5)616864
2003HONDAINSIGHTManual(M5)616864
2004HONDAINSIGHTManual(M5)606663
2005HONDAINSIGHTManual(M5)616663
2006HONDAINSIGHTManual(M5)606663
2002HONDAINSIGHTAuto(AV)575656
2003HONDAINSIGHTAuto(AV)575656
2004HONDAINSIGHTAuto(AV)575656
2005HONDAINSIGHTAuto(AV)575656
2006HONDAINSIGHTAuto(AV)575656

Summarized as:

MfrCarTransmissionBest CityBest HighwayBest Combined
HONDAINSIGHTManual(M5)617065