Uh, well yes. If I were to SUCK THE TANK DRY!!! On a normal basis I usually fill up at about 320 - 330 miles. At that point I put in about 14 to 15 gallons. You do the math. (Oh and the speedometer is correct)bjherron said:What your numbers say is that you are normally getting 400 miles to the tank, 500 if you cruise at 78mph on a hiway trip, and 350 if you are hot rodding. That's a little hard to believe.