I parked on a graded slope the other day, psgrside downhill, with nearly an empty tank. the car would not start. once I got it pushed to level ground it fired right up and drove to the gas station just fine. I have only had the car for a few months so I'm still feeling out the limitations also. when the low fuel indicator lights I only have about 10miles before I'm pumping vapors and even then I can only add maybe 13.5 gallons. I can tell someone has been under the fuel sender cover so I'm expecting a shallow pickup.