i have an st185 3sgte, i had the needle well under empty, and prolly did about 45km's from when the fuel light came on. I filled up with 98 (as I always do) cost me about 87 bucks to put 60 point something litres in the tank, and I get about 500-550km outta the tank as long as I don't drive like a boy racer.
I can pretty much get around all day without even having my boost gauge move at all. as long as I do that, I save a ton of fuel.
But the same goes for a N/A car, if I was to put my foot down and get 100km/h outta 2nd gear, and do this 3 or 4 times in a row, i could almost garauntee that I would use a 1/4 of a tank. Thats like 20 bucks worth of fuel just for me to go.. yeh, my car is kinda cool. I think i'd rather keep that money in my wallet and just have people look at my car and KNOW that its kinda cool
Well, thats my 2 cents anyway, or 8,700 cents if you must. I reckon if I really REALLY babied my car, I could get almost 600km outta the tank.
-Kevorkian