Comments on: Increase Gas Mileage with Gas Tank Full or Half Empty?

By: Quadbravo

Quadbravo — Mon, 07 Nov 2011 12:57:53 +0000

Seems counter intuitive that you’d get better gas mileage carrying more weight. The suggestion that gas evaporates faster in a tank only half full seems also pretty questionable. The surface area won’t really change until you’re near empty. I think most of this came from experiences on older cars. Pre 1973. Santana is right. Your gas is on lockdown today and any experience you have could well be due simply to weather, road conditions; heck, even different tires perform differently in different weather. If your car is less than 10 years old you’re chasing fly poop on this. If I stopped to fill every time I was at a half tank I would have made 200 more stops in any given year. Foregetting the lost time, the reacceleration cost alone would have offset any perceived advantage.

By: KP

KP — Thu, 08 Sep 2011 17:49:52 +0000

Rick,

Could you have gone more uphill on the way there vs downhill on the way back (maybe unnoticed?)?

By: Rick Honeberger

Rick Honeberger — Thu, 18 Aug 2011 12:14:48 +0000

I drove 81 miles and used a half a tank of gas. I was pulling an empty 6×10 trailer. On the way back , ( same exact route) I used a quarter of a tank. First half tank was bought at a different station than the second half tank. WHY?

By: Rey@r-a-ones

Rey@r-a-ones — Mon, 20 Jun 2011 11:33:11 +0000

Johnny Switchblades’ explanation aggrees with my experience. I own a 2010 Didge GRVan3.3L Ist top quarter I get 200 to 225 Km. the next Quarter to Half Full…less KM…125 to 150 Km VS. 200 to 225km in the first Top Quarter.

Any more similar experiences?

Therefore, for me, I would refill again when the Gauge hits 3/4Full.