Premium Gasoline Prices in Renton, WA

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

$4.96

Premium Gasoline (91-93 octane) per gallon

About Premium Gasoline in Renton

In Renton, premium unleaded is priced at $$4.96 per gallon. If you are uncertain whether your car needs premium, the owner's manual is definitive — 'required' means always use it.

When to Use Premium Gasoline

Best for: high-performance engines

Vehicle types: luxury and performance vehicles

Fuel Price Comparison in Renton

Fuel TypePricevs. Premium GasolineOctane
Regular Unleaded$3.97$-0.9987
Premium Gasoline THIS PAGE$4.96—91-93
Diesel Fuel$5.37+$0.41N/A

Premium Gasoline in Nearby Cities

Kent$5.01Bellevue$4.83Seattle$4.71Tacoma$4.85Everett$4.97Olympia$4.52
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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 Premium Gasoline prices at stations near your location in Renton. Warehouse clubs and high-volume discount stations typically offer the best Premium Gasoline prices.
All Premium Gasoline sold in Renton 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.

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