Exxon Gas Prices in Rapid City, SD

Exxon Mobil Rewards+ app lets members earn points on every fill-up redeemable for fuel savings and convenience store items. New members get a bonus on their first fill-up. Co-branded credit cards from major fuel brands typically offer 3-5% back on gas purchases at that brand's stations.

TOP TIER certification means a fuel brand's additives exceed EPA minimum detergency standards. This designation is recognized by major automakers including GM, Ford, BMW, and Toyota as beneficial for long-term engine health.

Exxon is one half of the ExxonMobil empire — America's largest publicly traded oil and gas company. Exxon stations offer Synergy fuel with a patented formula containing seven active ingredients that work continuously to clean and protect your engine. Exxon is particularly prominent across the Southeast, Mid-Atlantic, and Texas markets with a reputation for consistent quality. The key differentiator for Exxon fuel is its proprietary additive package, specifically formulated to clean fuel injectors, intake valves, and combustion chambers.

Exxon typically prices above Costco's member-only rates. Costco fuel is consistently 15-25 cents below street prices from brands including Exxon. For membership holders, Costco is almost always the cheapest option.