2024 Chevy HD DRW and SRW Fuel Economy Test

4x4ord wrote:
If you want to be more accurate with your mpg calculations just calculate less often. Instead of calculating based on 300 miles go 1200 or 1500 or 15000 miles. So fill up however you choose, reset your trip odometer, drive, keep track of all the fuel you put in, not bothering to fill up in any particular manner until the last fill up, at which time you fill up the way you did the first time. Calculate, and your going to be very close. One thing I like to do to get an accurate mpg figure is start my test with a clean DPF and end the same way.

Or to make it even simpler, although what you’re saying is good basic qualitative or quantitative analysis rules, check however you like, compare to the mpgs reading that virtually all trucks in the last 20+ years have. Get an idea of how close the digital readout is compared to your actual calcs and just use that if you must know what mpgs you’re getting at any or all times.
OR, start playing car games like slug bug or the license plate game, if you need a distraction from worrying about or calculating mpgs. And if that doesn’t work, try having a few road beers or sneak a toke if you’re retired and don’t have to pee in a cup to get a paycheck any more. It’ll chill you out.