Question: what are the best used cars for gas mileage?
Answer: Mitsubishi Mirage. When frugality comes first, it's hard to beat the Mitsubishi Mirage. ... 
Hyundai Elantra. ... 
Honda Civic. ... 
Toyota Camry. ... 
Hyundai Ioniq Hybrid. ... 
Toyota Prius Prime. ... 
Honda Clarity PHEV. ... 
Nissan Leaf.