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what cars use premium gas

1 Answers

SanMadelyn

12/19/25 5:44am

Most high-performance, luxury, and turbocharged vehicles require or strongly recommend premium gas (91 octane or higher). The key is to check your owner's manual, as using lower-octane fuel in a car designed for premium can cause engine knocking, reduced performance, and potential long-term damage. It's not just about brand prestige; it's about engine design.

Cars that typically need premium gas are engineered with high compression ratios or forced induction (like turbochargers and superchargers). These engines squeeze the air-fuel mixture more tightly to extract more power. Lower-octane fuel is less stable under this high pressure and heat, causing it to ignite too early—a phenomenon called engine knock. Modern engines have knock sensors that can retard ignition timing to prevent damage, but this results in less power and worse fuel economy.

Common examples span various brands:

Vehicle Type	Example Models (Typically Requiring Premium)	Engine Reason
High-Performance Sports Cars	Ford Mustang GT, Chevrolet Corvette, Porsche 911	High-compression, high-horsepower engines
Luxury Sedans/SUVs	BMW 7 Series, Mercedes-Benz S-Class, Audi Q7	High-output turbocharged engines
Sports Sedans & Coupes	BMW M3, Audi S4, Genesis G70 3.3T	Turbocharged engines for sporty tuning
Many Turbocharged Models	Mazda CX-5 Turbo, Ford EcoBoost F-150, Subaru WRX	Forced induction increases cylinder pressure
Supercars & Hypercars	Ferrari, Lamborghini, McLaren	Extreme performance engine designs

For some cars, the manual states "premium recommended." This means you can use regular gas without immediate harm, but you may not get the advertised horsepower and fuel efficiency. If your manual says "premium required," it's best to follow that instruction to maintain the health and performance of your engine.

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