Automotive Calculators
Octane Rating Cost Difference Calculator
Enter your annual mileage, MPG, and gas prices to calculate the extra annual cost of using premium instead of regular gas.
$192.00/year
Extra cost of always using premium instead of regular
Most cars are designed for regular gas and see no benefit from premium — only engines that specifically require or recommend premium (usually stated in the owner's manual) typically justify the extra cost.
How to use this tool
- 1Enter your annual miles driven.
- 2Enter your vehicle's MPG.
- 3Enter the premium and regular gas prices.
- 4See the extra annual cost.
Frequently asked questions
Does premium gas improve performance in any car?+
Only in engines specifically designed to require or recommend it (check your owner's manual) — in a car designed for regular gas, premium typically provides no measurable benefit.