Gulf Coast region
New MexicoGas prices
EIA doesn’t publish a weekly price for New Mexico on its own. This figure starts from the Gulf Coast average of $3.911 for the week of October 5, 2026 and adjusts it for New Mexico’s fuel tax, which is 4.5¢ a gallon below the regional norm. How we estimate it.
Gulf Coast prices this week
The regional averages New Mexico’s figures are drawn from, in dollars per gallon.
- Regular
- $3.911
- Down $0.013 on the week
- Midgrade
- $4.423
- Down $0.007 on the week
- Premium
- $4.772
- Diesel
- $5.819
- Down $0.136 on the week
The regional price is near its most expensive point of the past year: over the past 52 weeks it has run from $2.372 to $3.989, averaging $3.195. It has moved +6.1% over four weeks and +17.0% over thirteen.
How much of a gallon is tax
New Mexico charges 18.9¢ a gallon in state tax, the 49th highest of 51 (the 50 states and D.C.). With the federal tax that is 37.3¢, about 10% of the pump price.
| State excise tax | 17.00¢ |
|---|---|
| Other state taxes and fees | 1.88¢ |
| Federal excise tax | 18.40¢ |
| Total per gallon | 37.28¢ |
| On a 15-gallon fill | $5.59 |
| Over a year of typical driving | $179 |
From EIA’s notes for New Mexico: Petroleum Products Loading fee: $150 per 8,000 gallon load on gasoline and special fuels ($0.01875/gal). LOTs allowed, not in effect.
Source: EIA federal and state motor fuel taxes, July 2026. A typical year assumes 480 gallons (about 12,000 miles at 25 mpg). Local sales taxes are not included.
Fuel tax in New Mexico and its neighbours
New Mexico has the lowest fuel tax of its neighbours. Drivers coming in from Colorado pay 11.3¢ a gallon less in state tax here, $1.70 on a 15-gallon fill.
| State | State tax | Versus NM | On a 15-gal tank |
|---|---|---|---|
| New Mexico | 18.9¢ | — | — |
| Arizona | 19.0¢ | +0.1¢ | +$0.02 |
| Oklahoma | 20.0¢ | +1.1¢ | +$0.17 |
| Texas | 20.0¢ | +1.1¢ | +$0.17 |
| Colorado | 30.2¢ | +11.3¢ | +$1.70 |
What driving in New Mexico costs
- A 15-gallon fill
- $57.99
- A year of typical driving
- $1,856
- Versus the national average
- $234 a year less
Planning a drive? The fuel cost calculator prices a trip at this week’s New Mexico figure, for your own car.
How we estimate the New Mexico price
The U.S. Energy Information Administration surveys retail gasoline prices every Monday, but it reports individual figures for only nine states. New Mexico is counted in the Gulf Coast series, which averages it together with Alabama, Arkansas, Louisiana, Mississippi and Texas.
Within one region, crude oil, refining and most delivery costs are shared. The biggest fixed difference from one state to the next is tax, which reaches the pump almost cent for cent. So we take the regional average and add the gap between New Mexico’s tax (18.9¢) and the average tax across the region’s states (23.4¢).
Local taxes, how busy the local market is and how far the state is from a refinery all move real prices too, so treat this as a guide to within a few cents, not a quote. Our methodology covers how every figure on the site is sourced.
Gas prices in New Mexico
- How much is gas in New Mexico right now?
- Regular gasoline in New Mexico is estimated at about $3.87 a gallon this week. That starts from the EIA's Gulf Coast average of $3.911 and adjusts it for New Mexico's fuel tax, which is 4.5¢ a gallon below the average across the region's states. The national average is $4.354.
- How much is the gas tax in New Mexico?
- New Mexico charges 17.00¢ a gallon in state excise tax plus 1.88¢ in other per-gallon taxes and fees, 18.88¢ in all. That ranks 49 of 51 (the 50 states and D.C.), highest first. With the 18.4¢ federal tax, a gallon carries 37.3¢ of tax.
- Is gas cheaper in a state next to New Mexico?
- Not on tax. New Mexico already has the lowest state fuel tax among its neighbours, so any cheaper price across the line would come from local competition rather than tax.
- Why is there no official weekly gas price for New Mexico?
- The EIA's weekly survey samples about 1,000 stations nationwide, enough for reliable regional averages and for nine large states, but not for every state on its own. New Mexico is counted in the Gulf Coast series, which is updated every Monday and published on Tuesday.