After much effort, We managed to gather all cars they were released in Europe the last 20 years with real consumption of gasoline below 7 l / 100 km (more than 33,60 mpg). Although some of these models are never released in US, it's a very useful guide to everyone who likes to buy a very cheap, yet fuel efficient car.
Real consumption data of all 220 cars gathered, are obtained from site www.spritmonitor.de