Utah vs Wyoming gas prices
Regular gas is $0.12 a gallon cheaper in Wyoming — $1.74 on a 15-gallon fill-up. The two share a border, so that gap is worth knowing before you cross it.
Utah
Wyoming| Grade | UT | WY | Diff. | |
|---|---|---|---|---|
| Regular | $4.25 | $4.14 | $0.12WY | Wyoming |
| Midgrade | $4.54 | $4.45 | $0.08WY | Wyoming |
| Premium | $4.80 | $4.71 | $0.09WY | Wyoming |
| Diesel | $5.28 | $5.10 | $0.18WY | Wyoming |
Where the $0.12 gap actually comes from
All of it is tax, and then some. The fuel itself is dearer in Wyoming before tax — by $0.01 a gallon — yet it is still $0.12 cheaper at the pump, because Utah levies $0.13 more per gallon. Policy is doing all of the work here and overcoming a product disadvantage on the way.
Fuel, refining, distribution and marginFederal and state taxes Pre-tax figures are estimates — see the note below.
What the gap is worth
Based on today’s $0.12 per-gallon difference, which moves week to week. Use the fuel cost calculator for your own mileage and vehicle.
Prices by metro area
State averages hide a lot. These are the cheapest metros AAA reports on each side.
Other comparisons
Frequently asked questions
Is gas cheaper in Utah or Wyoming?
Regular gas is cheaper in Wyoming, at $4.14 a gallon against $4.25 in Utah — a gap of $0.12, or 2.8%. On a 15-gallon fill-up that is $1.74. Figures are AAA daily state averages for 2026-08-02.
Why is gas more expensive in Utah?
Entirely because of tax. Wyoming actually pays more for the fuel itself — $0.01 a gallon more before tax — but Utah levies $0.13 more per gallon, which more than reverses the advantage.
Is diesel cheaper in Utah or Wyoming?
Diesel is cheaper in Wyoming at $5.10 a gallon, against $5.28 in Utah — $0.18 a gallon apart.
Is it worth crossing from Utah into Wyoming to fill up?
If you are already near the line, yes: a 15-gallon fill saves about $1.74. Driving out of your way for it rarely pays — at $4.25 a gallon and 25 mpg, a 5-mile round trip would eat the whole saving in fuel alone, before your time.