Now this question goes out to OFFSET how the hell you managed to squeeze in there 362 miles on a single tank and add 18.5 of gas? You did remember to reset the trip computer when you filled up right? Just checking!! cant see this car getting that when no one else has reported anything close to that
I took a 200 mile road trip. Filled up before heading out. Was able to keep the speed at 70-75 for most of the trip. A few pockets of traffic dropped me down into the 50's for a while.
I filled up at my destination, even though it was only at half a tank (yes 200 miles on HALF a tank). I don't remember the exact amount of fuel, but I do remember I calculated 23.6 MPG.
23.6 * 18 = 425 so 362 doesn't seem too unreasonable for me.
These engines are very sensitive to reformulated gas. If you have the gas with 10% ethanol your MPG will suffer noticeably.