10 best Used Cars / SUVs with good fuel economy

Yes, it's a small city car, but if check it out, the Yaris actually has decent passenger room and plenty of available features like the air conditioner, power windows and the ABS. The Yaris is very maneuverable and easy to park. Plus, it's not very expensive.
The EPA fuel economy estimate for 2007 Yaris: 29/35 mpg or 8.1/6.7 liters/100 km (city/highway)

The Corolla is a reliable easy-to-maintain and easy-to-sell compact car. It has a simple but comfortable interior and smooth ride. All this makes the Corolla a good choice for an economical commuter.
The EPA estimates for the 2007 automatic model:
26/35 mpg or 9.0/6.7 liters/100 km (city/highway)

Unlike the Corolla, Honda Civic offers more sporty handling and ride. Similarly, the Civic won't cost much to maintain. The EPA estimates for 2007 Honda Civic with an automatic transmission:
25/36 mpg or 9.4/6.5 liters/100 km (city/highway)

Pontiac Vibe is a product of joint venture between General Motors and Toyota. The Vibe is a tall hatchback with sporty interior, decent cargo space and good fuel-efficient low-maintenance engine. The Vibe is simple, reliable and easy to maintain.
The EPA estimates for 2007 Pontiac Vibe with an automatic transmission: 25/31 mpg or 9.4/7.6 liters/100 km (city/highway)

Toyota Matrix is a tall wagon with good interior headroom and an easy-to-clean cargo floor covered with a durable plastic. The 2008 and newer Matrix (model with the side airbags) scored well in crash tests. Similarly to the Corolla it is based on, the Matrix is reliable and easy to maintain. The EPA estimates for the automatic 2009 Matrix: 25/31 mpg or 9.4/7.6 liters/100 km (city/highway)

Toyota Camry is a reliable roomy and very comfortable family sedan with smooth and quiet ride. The Camry has plenty of rear-seat and cargo space. The Camry's low-maintenance 4-cylinder engine is very fuel-efficient, yet provides enough power for daily driving. The EPA estimates for the 2009 4-cylinder Camry with an automatic transmission: 21/31 mpg or 11.2/7.6 liters/100 km (city/highway)

Sporty sharp looking family sedan, the Accord has a spacious interior, precise handling and firm ride. The Accord's selling points are its excellent low-maintenance 4-cylinder engine, good cargo space, fresh interior design and good reliability records. The EPA estimates for the 2009 Honda Accord automatic: 21/30 mpg or 11.2/7.8 liters/100 km (city/highway)

The RAV4 is a small, practical car-based SUV with sleek styling. Toyota RAV4 is fun to drive and easy to maintain. Available as 2WD or 4WD.
The EPA estimates for the 2007 4-cylinder 4WD automatic model:
20/25 mpg or 11.8/9.4 liters/100 km (city/highway)

Honda CR-V is a small, versatile, car-based SUV. It's fairly reliable and easy to maintain. The CR-V offers very practical interior with many well-thought amenities, including even a foldable picnic table.
The EPA estimates for the 2007 4WD automatic model: 19/26 mpg or 12.4/9.0 liters/100 km (city/highway)

The Forester is a solidly built small car-based SUV (although it looks like a tall wagon) with an excellent all-weather handling and smooth ride. The Forester is maneuverable; it has good visibility, capable AWD system, decent towing capability and very good crash-test scores. The EPA estimates for the 2007 4WD automatic non-turbo model: 20/25 mpg or 11.8/9.4 liters/100 km (city/highway)