A hybrid car may be a good fit depending on your driving habits as they offer tax credits, excellent resale value, and efficient gas consumption. Gas mileage in hybrid cars can range from 18 to 66 mpg in the city or highway depending on the make and model, though actual mileage depends on driving patterns. Hybrid cars use both a gas and electric motor, with the electric motor providing a power boost to the smaller, more efficient gas engine or potentially powering the car on its own.