Top 10 Cheapest Non-Hybrid Cars That Get 40 MPG Highway

4. Chevy Sonic LT Hatchback $17,750

The Chevrolet Sonic is the first and most expensive subcompact on our list. Equipping a LT hatchback with the 1.4L turbocharged motor and a manual transmission costs $17,750, or about $700 more than a similarly equipped sedan. With fuel-saving tech like variable valve timing, and an electric power steering rack instead of a hydraulic setup, help the Sonic get its impressive fuel economy numbers. Check out the full specs of the Chevrolet Sonic at our new car buying page.