10 Surprisingly Fuel-efficient Vehicles Published on April 22, 2020 in Top 10 by Guillaume Rivard Photo: Mitsubishi 2020 Mitsubishi Mirage It may be dull-looking and extremely slow with just 78 horsepower, but the Mirage is the most fuel-efficient non-hybrid vehicle in Canada, achieving a combined 6.2 L/100 km when paired with a CVT.