Premium gas sales dipped in June 2025. Down 5 percent.
The culprit is clear enough. Prices spiked because of the conflict with Iran. Oil markets don’t forget tension, they punish it. So do wallets.
Regular fuel is cheaper. Obviously. The average price per gallon has slid back below $4.00 so far this July, per AAA, but the hangover from June still lingers. Pain at the pump. That kind of pain changes behavior fast.
“We almost always see premium cannibalised by regular,” said Patrick De Haan at GasBuddy.
Bloomberg tracked the shift via Upside, a cash-back app. Between June 22 and 25, premium purchases fell 5.0 percent compared to February averages. February makes sense as a baseline, it’s the last breath before US strikes on Iran sent oil prices skyrocketing.
Mid-grade tanked too. A modest 2 percent drop.
Regular gas? Sales jumped 10 percent.
People are mixing their cocktails down. It’s risky. Many luxury and performance cars actually require 91-octane fuel or higher. The manual isn’t advice. It’s instruction. Ignore it, you get engine knocking. Maybe worse. Lasting damage to expensive parts that don’t come cheap to replace.
Not every car demands the top shelf stuff, though. Some manufacturers, Mazda being a loud one here, just offer more horsepower if you pay the premium. It’s an upgrade path, not a requirement.
Does the extra power matter when you can’t afford to fill the tank?
Here is the dirty secret automakers don’t advertise loudly. Often, the luxury variant of a car shares the exact same engine block as the mainstream model. The software just locks out power to save you money—or rather, to keep the badge hierarchy intact. Put high-octane gas in a standard Toyota or Nissan, and sometimes you unlock features reserved for the Lexus or Infiniti version.
Look at these pairs. Same heart. Different badge. Different tune.
- Nissan Armada: 425 hp / 516 lb-ft torque
- Infiniti QX80: 450 hp / 516 lb-foot torque (uses the Armada’s engine but tuned differently)
Wait, look closer.
- Toyota Grand Highlander Hybrid Max: 362 hp / 400 lb-ft
- Lexus RX 500h Performance: 366 hp / 406 lb-foot
The specs are nearly identical. The hardware is the same. You buy the luxury tag for the badge, not necessarily a stronger engine. So why pay for premium if you drive the base model? You probably shouldn’t have to. But if you own the premium version… well, now you’re cutting corners on a luxury sedan.
It feels cheap. Maybe it is.
Prices are rising. Trading your gas-guzzling V8 for a hybrid hatchback isn’t an option for everyone today. Selling takes time, loses equity, feels like surrender.
So you drive it. You pour in regular. You accept the slight dullness of the acceleration. Or you ignore it completely until the check engine light comes on.
Which is more likely?
