7. Audi A3 TDI (32 mpg combined)
This list isn’t just full of hybrids, though this diesel powered Audi A3 is the only vehicle here that doesn’t have some kind of electrified powertrain. Using a 2.0-liter turbocharged diesel engine, which makes 140 hp and 236 lb-ft of torque, the A3 TDI is an affordable yet luxurious compact which gets an EPA rated 34 mpg in combined driving conditions. For $30,250 this is one of the cheapest cars on the list, and will still keep you smiling at the pump.