Regular Unleaded Prices in Missoula, MT

Updated April 5, 2026 — Prices updated regularly from EIA data

$3.13

Regular Unleaded (87 octane) per gallon

About Regular Unleaded in Missoula

The going rate for regular 87-octane gas in Missoula is $$3.13 per gallon this {month}. Discount chains and warehouse clubs can be 10-20 cents cheaper than premium branded stations for identical quality fuel.

When to Use Regular Unleaded

Best for: everyday driving

Vehicle types: most cars and trucks

Fuel Price Comparison in Missoula

Fuel TypePricevs. Regular UnleadedOctane
Regular Unleaded THIS PAGE$3.13—87
Premium Gasoline$3.91+$0.7891-93
Diesel Fuel$4.24+$1.11N/A

Regular Unleaded in Nearby Cities

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Frequently Asked Questions

Mixing grades is generally fine in practice — your engine's knock sensors will adjust timing accordingly. If your vehicle requires premium and you add some regular, no immediate damage occurs. Consistently running below the required octane in a performance engine is not recommended long-term.
{octaneInfo} Octane rating measures a fuel's resistance to premature ignition (knock). Standard regular is 87, mid-grade is 89-90, and premium is 91-93 in the United States.
Use GasBuddy and filter by fuel type to see current Regular Unleaded prices at stations near your location in Missoula. Warehouse clubs and high-volume discount stations typically offer the best Regular Unleaded prices.
All Regular Unleaded sold in Missoula must meet minimum federal standards. TOP TIER certified stations add extra detergency additives. Most major brands (Shell, Chevron, Costco, Wawa) are TOP TIER certified. Non-certified independents meet legal minimums only.

Related Gas Price Pages

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