We bought a 1997 B 190 last August 2005, with 67,000 miles on. Spent lots $$$$ replacing brakes, wheels, alignment, bushings, hoses, belts, tires, plastic grill, new soft interior goods, micorwave, TV,etc. It is eqipped with the Triton V-10 Ford engine. Travelling to California last November from Denver on the Interstates 25 and 40 nd 15, speeding along around 65 to 70 mph, we will call it 11 mpg. With the a 16 ft Bambi quickSilver behind driving on rolling foothill geography of the front range of Colorado, it was not too spunky up hills, and mileage was a guess of 5-7 mpg. Power was just Ohh-kay with the Bambi entow.
Anything smaller than the 460, you would be very sorry. I weighed our B-van with full water and fuel and it weighed in at 8,220.
They are not light.