Top 10 Cheapest 40 MPG Cars

1. Honda Insight $19,390

The most affordable hybrid on the list is the Honda Insight, which uses a mild hybrid setup like the Honda Civic Hybrid. This time however the engine is a smaller 1.3-liter engine paired with a less-advanced nickel metal hydride battery pack to make a total of 98 hp, and help the car net 42 mpg combined. A less impressive specimen than most on the list it’s at least the cheapest at just $19,390 to start. Se the full specs of the Honda Insight right here.