The most fuel efficient SUV today is the 2012 Ford Escape Hybrid. Ford's Escape Hybrid was designed to get the most out of each drop of gas put into the vehicle to ensure the customer would spend more time driving and less time refueling. Since the it is a hybrid one of the engineers main focuses was making the SUV fuel efficient.
The most energy efficient car available is the Toyota Prius. Please see the following, for additional information: www.thesupercars.org/top-cars/most-fuel-efficient-cars
The most fuel efficient vehicles on the market today are usually hybrids. However, many small and economy sized vehicles on the market are not hybrids but are very fuel efficient as well.
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Many SUV's are not fuel efficient.
The honda cb 110 is the most fuel efficient motorcycle in it's class
The most dependable fuel efficient car of 2014 is the Ford Focus.
The 2012 Mitsubishi is one of the most fuel efficient SUVs in the market. It has 112 MPG and is very fuel efficient. I recommend the 2012 Mitsubishi for your needs.
Www.utoGuide.com has a list of the top ten most fuel efficient pickup trucks for 2013. Www.shopautoweek.com also has a list of its top four most fuel efficient pickup trucks.
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There hasn't really been a brand of semi trucks recognized as the most fuel efficient. Since they run on diesel a more efficient fuel, semi trucks already are more fuel efficient than cars in terms of size and power.
Ford makes an SUV that are fuel efficient and considered to be luxury by some. Most of the high end automobile companies now have an SUV that is fuel efficient.
There are several places you can look online to find a list of the most fuel efficient cars. Check FuelEconomy.gov, they have a pretty extensive list. CNN recently did a story on the eight most fuel efficient cars. Check out their report.