Premium Gasoline Prices in Decatur, IL

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

$4.58

Premium Gasoline (91-93 octane) per gallon

About Premium Gasoline in Decatur

The current premium gas price in Decatur is $$4.58 per gallon. Before paying the premium price, confirm your vehicle actually requires or recommends it. Only about 16% of US vehicles truly need premium fuel.

When to Use Premium Gasoline

Best for: high-performance engines

Vehicle types: luxury and performance vehicles

Fuel Price Comparison in Decatur

Fuel TypePricevs. Premium GasolineOctane
Regular Unleaded$3.67$-0.9187
Premium Gasoline THIS PAGE$4.58—91-93
Diesel Fuel$4.97+$0.39N/A

Premium Gasoline in Nearby Cities

Springfield$4.17Champaign$4.46Bloomington$4.58Peoria$4.56
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Frequently Asked Questions

{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 Premium Gasoline prices at stations near your location in Decatur. Warehouse clubs and high-volume discount stations typically offer the best Premium Gasoline prices.
All Premium Gasoline sold in Decatur 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.
In Decatur, Premium Gasoline is priced at $$4.58 per gallon versus ${regularPrice} for regular — a ${diff} per gallon premium. On a 15-gallon fill-up, that's ${fillDiff} extra. Over 50 annual fill-ups, the premium adds ${annualDiff} to your fuel costs.

Related Gas Price Pages

All Fuel Types in DecaturGas Prices in IllinoisCheapest Premium Gasoline in DecaturCompare All StatesRegular Unleaded in DecaturDiesel Fuel in DecaturShell Premium Gasoline - DecaturExxon Premium Gasoline - DecaturBP Premium Gasoline - DecaturChevron Premium Gasoline - Decatur