Originally Posted by 2015_PSD
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During our annual hunting trip, I rented a Jeep Sahara and can testify the fuel gauge is accurate. On the Kansas turnpike, I could not find a gas station for many miles. I should have filled up in Salina, but assumed like most freeways there would be gas stations sprinkled everywhere, but there were not. We had 6 miles to E before we found a station.
I've noticed that the 2 or 3 times I drove west across Kansas on I-70. The exits are pretty far apart, and not every exit sported a fuel station just off the Interstate.
The other element to driving west across Kansas is that you are actually going uphill. Kansas City is about 1000 ft. above sea level; the Colorado border is about 4000 ft. The state seems like a big flat table, but that table is tilted. If you drive into a westerly wind as well, your gas tank will empty a little faster than you realize.
As for worrying about "E," I don't on a car I've driven long enough to know what its reserve is. On a car that's new to me, I do get nervous. No telling how accurate that gauge or its "miles to empty" figure is. Not long after I bought the LaCrosse, I got stuck in bumper-to-bumper traffic after a storm and flood blocked some streets around my evening commute. The car was low on gas, but I didn't know for sure just how low, and the fuel light winked on. During the second hour of the creeping trip (yes; two hours to do a trip that normally takes 35 minutes. I hate this city), I was getting nervous.
Turned out I still had 3 gallons left when I gassed up the next morning. The gauge on this car is not razor-sharp accurate. But I know that now.