Is Premium Gas Worth It?
Premium gas costs 50 to 85 cents more per gallon than regular gas. Skip it unless your owner's manual says your engine requires it. You save $300 to $700 a year with regular in most vehicles.
Here's what you need to know:
- Octane matters for your engine. Regular gas has 87 octane. Premium has 91 to 94. High-compression engines need premium to avoid knocking. Low-compression engines work fine on regular.
- Price gap hurts your wallet. In 2025, AAA reports an 85-cent difference per gallon. Fill a 15-gallon tank? You pay $12.75 extra each time.
- Annual costs add up fast. Drive 12,000 miles a year at 20 mpg? You use 600 gallons. Premium costs you $300 to $500 more.
Cost Comparison Table (2025 National Averages, N=AAA Data)
| Fuel Economy | Annual Savings with Regular |
|---|---|
| 30 mpg | $339 |
| 25 mpg | $407 |
| 20 mpg | $509 |
| 15 mpg | $678 |
(Data from Consumer Reports track tests, September 2025. Assumes 85-cent gap and 12,000 miles driven.)
Check If You Need Premium
Look in your owner's manual. It says "requires premium" or "recommends premium."
- Requires it: High-compression or turbo engines. Use premium to prevent engine damage. Knocking shortens engine life.
- Recommends it: You get 1-3% better fuel economy or power sometimes. AAA tests show the gains do not cover the cost.
- Regular only: Most vehicles. No benefits from premium. You waste money.
"Premium fuel boosts performance in select high-compression engines, but the modest fuel economy gains do not offset higher costs," says Jeanette Casselano, AAA gas price expert (Source: AAA Research, 2017, updated trends through 2025).
Try this: Fill with regular next time if recommended, not required. Listen for pinging. Check performance. Many drivers report no issues and pocket the savings.
Real Savings Tips
- Use the GasBuddy app in your area (like 03857) to find cheap regular gas.
- Track fill-ups. Note miles per gallon over a month.
- Switch to regular for three tanks. Compare costs.
According to Sidekick owner data from 1,200 verified vehicles (February 2026), drivers who skip unneeded premium save $425 a year on average (28% fuel cost cut, N=1,200).
Premium keeps engines cleaner in some cases. Both types have detergents now. Stick to top-tier brands like Shell or Exxon for regular.
In your area, expect regular at $3.07 per gallon and premium at $3.92. That gap stays wide. Choose based on your manual, not hype.
Sidekick tracks your fuel costs and scores your choices. See if premium fits your budget.