Two car brands that consistently top the ranks of fuel economy are Toyota and Honda. The Toyota Prius, a fuel-electric hybrid, regularly achieves a combined 50 miles per gallon rating across several model years. The Prius plug-in hybrid does even better, with a combined rating of 58 mpg. The Honda Civic is a historically fuel-efficient vehicle, with drivers of various models and model years reporting fuel efficiency rates of 47 mpg or higher, as of 2015.
Other models on the top 10 lists include the Chevrolet Volt, the Ford Energi line of vehicles, and models from BMW and Audi.
The 2016 Chevrolet Volt is a plug-in hybrid vehicle that gets 77 mpg, running on a four-cylinder engine and electrical power. The Ford Energi line of vehicles, specifically the C-Max and Fusion model years from 2013 to 2016, average 51 mpg each. The 2000 model year Honda Insight achieves 53 mpg and offers the option of a manual transmission.
Within the scope of luxury vehicles, BMW and Audi are top performers for fuel efficiency. The BMW i3 REx operates a two-cylinder engine with premium gasoline. This model tops the competition with a rating of 88 mpg combined highway and city driving. The Audi A3 e-tron ultra ranks lower, getting only 49 mpg, but offers drivers a four-cylinder turbo engine, which is not common among hybrid cars.