What it costs to fuel a 2026 Honda Civic in Idaho
Short answer
Driving 1,000 miles a month at $3.96 a gallon for regular. That's 11.6¢ a mile and $1,397 a year.
Estimate: Rocky Mountain regional average, adjusted for Idaho's fuel tax (1.1¢/gal higher than the region's average).
Change the version, miles or price
- Per year
- $1,397
- Per mile
- 11.6¢
- Over 5 years
- $6,983
Every 2026 Civic version in Idaho
| Version | Drive | EPA rating | Per month |
|---|---|---|---|
| Civic 4Dr | FWD | 49 mpg | $81 |
| Civic 5Dr | FWD | 48 mpg | $82 |
| Civic 4Dr | FWD | 36 mpg | $110 |
| Civic 4Dr(used in headline figures) | FWD | 34 mpg | $116 |
| Civic 5Dr | FWD | 34 mpg | $116 |
| Civic 4Dr | FWD | 31 mpgpremium | $150 |
| Civic 5Dr | FWD | 24 mpgpremium | $194 |
Civic vs. Tesla Model Y in Idaho
The Model Y costs about $1,002 a year less to run here.Counting Idaho's $140 EV fee, the saving is about $862.
See the break-evenIdaho's gas tax: 33¢ a gallon, plus 18.4¢ federal
Of the estimated $3.96 a gallon for regular in Idaho, 51.4¢ is tax: 13% of the price.
At 1,000 miles a month, the Civic (34 mpg) pays about $15 a month in fuel tax, $181 a year. Idaho's state gas tax is near the middle of the 50 states and DC.
Idaho charges no extra fee for the Civic's hybrid versions.
Electric cars pay no gas tax, so Idaho charges them an extra registration fee instead: $140 a year.
Fuel taxes: EIA, July 2026 (revised); county and city taxes not included. Pump price is an estimate: Rocky Mountain regional average, adjusted for Idaho's fuel tax (1.1¢/gal higher than the region's average). Hybrid fee: U.S. Department of Energy. EV fee: U.S. Department of Energy. Fees checked October 2026.
Rocky Mountain gas prices are down 49¢ in a month
EIA doesn't survey Idaho on its own, so the price on this page moves with the Rocky Mountain average: $3.95 a gallon for regular in the week of November 9, 2026, 49¢ less than four weeks earlier and $1.04 more than a year ago. Over the past year it ranged from $2.40 (week of January 5, 2026) to $4.59 (week of May 18, 2026). At 1,000 miles a month, the Civic costs about $14 a month less to fuel than four weeks ago.
Show every weekly figure
EIA weekly retail gasoline and diesel prices.
Idaho is about average to fuel a Civic
27th cheapest of the 50 states and DC, at 1,000 miles a month. See every state
- 1Texas$100
- 2New Mexico$101
- 3Louisiana$102
- 4Mississippi$103
- 5Arkansas$103
Questions people ask
How much does it cost to fuel a Honda Civic in Idaho?
About $116 a month for 1,000 miles, or $1,397 a year, for the 2026 Civic 4Dr (34 mpg) at $3.96 a gallon for regular. That works out to 11.6¢ a mile.
Which Civic version is cheapest to fuel?
The Civic 4Dr (49 mpg), at about $81 a month in Idaho. The 2026 Civic comes in 7 EPA-rated versions.
Where does the Idaho gas price come from?
Estimate: Rocky Mountain regional average, adjusted for Idaho's fuel tax (1.1¢/gal higher than the region's average). It updates every week when EIA publishes its survey.
How much of the gas price in Idaho is tax?
51.4¢ a gallon: 33¢ Idaho state tax and 18.4¢ federal tax. That is 13% of the estimated $3.96 a gallon for regular.
Are gas prices going up in Idaho?
EIA doesn't survey Idaho on its own, so the price on this page moves with the Rocky Mountain average: $3.95 a gallon for regular in the week of November 9, 2026, 49¢ less than four weeks earlier and $1.04 more than a year ago. Source: EIA's weekly retail price survey.
Efficiency: U.S. EPA ratings for the 2026 model year. Gas prices: EIA weekly survey, week of November 9, 2026. Electricity: EIA average home rates, September 2025 to August 2026. Fuel taxes: EIA, July 2026 (revised). How we calculate