Ah all right, I get what you mean.
Honda CRV or Toyota RAV4 is a good choice for a small SUV, but it's not a "heavy duty" suv, tho it gets about 20-22 mpg and it has 4 cylinder engine, too. Subaru Forester is also good, too. It looks like a tall station wagon than a suv, but it does ride kinda high.
My 1994 Honda Civic gets average of 30-33 mpg. 
