Updated April 5, 2026 — Prices updated regularly from EIA data
$5.09
Diesel Fuel (N/A octane) per gallon
About Diesel Fuel in Spokane
In Spokane, diesel is $$5.09 per gallon today. The diesel market is driven heavily by commercial demand — trucking, construction, and agriculture. Consumer diesel vehicles represent a small but growing segment of the passenger car market.
When to Use Diesel Fuel
Best for: commercial and towing
Vehicle types: diesel trucks and commercial vehicles
Fuel Price Comparison in Spokane
Fuel Type
Price
vs. Diesel Fuel
Octane
Regular Unleaded
$3.76
$-1.33
87
Premium Gasoline
$4.70
$-0.39
91-93
Diesel Fuel THIS PAGE
$5.09
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N/A
Diesel Fuel in Nearby Cities
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Only if your vehicle requires or recommends it. For vehicles designed for regular 87 octane, there is no measurable performance benefit from upgrading to Diesel Fuel. If your manual specifies Diesel Fuel, the investment protects your engine.
Diesel Fuel in Spokane is currently priced at approximately $$5.09 per gallon. Nearby cities have comparable prices within 10-15 cents depending on their state's tax structure and local competition.
Diesel Fuel costs more due to the additional refining required to achieve its specifications. Higher octane fuel requires more complex blending processes. The markup reflects real production costs, not arbitrary station pricing.
Check your vehicle's owner manual or the inside of your fuel door. Required means you must use that grade to avoid damage. Recommended means optimal performance uses that grade but lower grades are tolerable. Regular means 87 octane is sufficient.