Originally Posted by Zipper 104

I mentioned the lights only in passing as reference. What the lights showed played no part whatsoever in what I did. I simply filled the tank up at the start of the run letting the nozzle click off a couple of times in an attempt to get as full a tank as I could. I did this on both ends of the 75 mile stretch. If there was a difference in the volume of fuel in the tank in the beginning versus the end, it would have been mere ounces.
That's the only real way to determine actual consumption. Gauge lights and in-car computer are simply fluff. Driving further into the tank would have been preferable for sure but I didn't and don't care. End of story.
I explained what I did to arrive at the numbers I got. They speak for themselves. Like it, or not. That's what they were. I had no hidden agenda.
We all know the 370 is no Toyota Prius, and nor do any of us care.
What I arrived at showed (to my satisfaction anyway) that if you keep your foot out of it, the car is capable of half decent fuel consumption numbers at 60 - 70 mph velocities out on a relatively flat freeway void of much congestion.

104

Originally Posted by JARblue

I could care less about my mpgs, but I religiously pay attention to the mileage I get per tank. Therefore, I know almost exactly how much fuel I have at any given time just based on the miles I have driven since last filling up. I hit the 50 miles left warning and know that most of the time I have at least 100-120 miles remaining of casual driving. I often fill up more than 18 US Gal. Driving habits alter mileage, of course, so I take that into consideration as well.