Mazda Bongo V-6 performance?

Hi all,
I'm on the verge of buying a 1997 Mazda Bongo Auto free top that is equipped with a 2500cc V-6. I'm wondering how this motor is in terms of performance -- is acceleration adequate for pulling onto highways? -- and gas mileage. If anyone knows the general mpg I can expect and how many miles a tank of gas will go, I'd greatly appreciate you letting me know.

Thanks,
Jim