I want a medium SUV with good gas mileage, CRV too small and expensive. RAV 4 too small, poor mileage and way over priced. The Sportage, Santa Fe and Rogue OK - but Rogue gas mileage may not be as good.
I want the reliability and ride of the old Rodeos (mileage not so great). I wish Isuzu Japan was still exporting SUVs, and they weren't partnered with GM. When you are paying $4.50 a gallon mileage is too important to ignore
If fuel economy is one of the most important factors for your SUV, then it has to be diesel. Diesel is cheaper than gasoline by almost 50 pesos a gallon and the engines are more economical.
I had a mercedes ML280CDI (3L turbo diesel V6) which did over 40mpg and really flew when you floored it. Although I don't recommend these high end German marques if you're not handy with a toolbox and can work with an OBD2 scanner. I put 90k kms on my ML before I sold it. I did my own maintenance and enjoyed owning it. I have since changed it for a 2012 Highlander Ltd, which actually feels more refined than the Benz. The only maintenance i will probably do are regular oil changes (essential for Toyotas) and brake pads. I highlight regular oil changes for Toyotas because their engines have a tendency to accumulate sludge in the sump which can eventually congeal and cause oil starvation problems. The only reason a Toyota engine will fail prematurely will be down to lack of regular oil changes.
Now you say you want a mid size SUV that is fuel efficient, then I would go for the Toyota Fortuner. Essentially a Hilux with an SUV body. Rugged , bullet proof undercarriage and a 3L turbo diesel that will go on forever if you look after it.