what cars take premium gas

[MacBradley]

Most luxury brands, high-performance sports cars, and vehicles with turbocharged or high-compression engines are designed to run on premium gas (91 octane or higher). Using regular fuel in these cars can cause engine knocking, reduce performance, and potentially lead to long-term damage. Always check your owner's manual for the manufacturer's specific recommendation.

The primary reason for requiring premium fuel is engine design. High-performance engines often have a higher compression ratio, meaning the air-fuel mixture is squeezed more before ignition. This creates more power but also raises the risk of premature combustion, known as engine knocking. Premium fuel's higher octane rating resists knocking, allowing the engine to operate safely at its designed performance level.

Modern cars have knock sensors that can retune the engine to run on regular gas, but this comes at a cost. The engine control unit (ECU) will reduce power and efficiency to protect the engine. You'll likely notice a drop in fuel economy and acceleration.

Here are some common brands and models that typically require or strongly recommend premium gas:

Brand	Example Models	Engine Type	Fuel Requirement
Mercedes-Benz	S-Class, AMG models	Turbocharged V8, V12	Required
BMW	M3, M5, 7-Series	Turbocharged I6, V8	Required
Audi	S4, RS5, A8	Turbocharged V6, V8	Required
Porsche	911, Cayenne Turbo	Turbocharged Flat-6, V8	Required
Jaguar	F-Type, XJ	Supercharged V6, V8	Required
Land Rover	Range Rover Sport	Turbo/Supercharged V6, V8	Required
Genesis	G90	Twin-Turbo V6	Recommended
Acura	NSX, MDX Type S	Turbocharged V6	Required
Infiniti	Q50 Red Sport	Turbocharged V6	Required
Lexus	LC 500, LS 500	V8, Twin-Turbo V6	Recommended
Ford	Mustang Shelby GT500	Supercharged V8	Required
Chevrolet	Corvette, Camaro ZL1	V8	Required
Dodge	Charger SRT Hellcat	Supercharged V8	Required
Subaru	WRX STI	Turbocharged Flat-4	Required
Volvo	S90, XC90 Inscription	Turbo/Supercharged I4	Recommended
Maserati	Ghibli, Quattroporte	Twin-Turbo V6, V8	Required
Tesla	Model S Plaid	Electric	N/A (Electric)
Hyundai	Genesis G70	Turbocharged I4	Recommended

If your car "recommends" premium, you can use regular occasionally, but for consistent performance and fuel economy, premium is best. If it "requires" premium, you should not use a lower grade.

[McLuke]

Honestly, if you drive a luxury sedan or a sporty car, you should probably be using premium. My buddy filled his BMW with regular to save a few bucks and ended up with a hefty repair bill for engine issues. The manual isn't just a suggestion. It's cheaper in the long run to just use what the manufacturer specifies. Don't risk your engine's health to save a couple dollars at the pump.

[AaliyahLee]

It's all about the engine's needs. High-performance engines are built to tighter tolerances and generate more heat and pressure. Premium fuel burns cleaner and more controllably under these extreme conditions. Using regular gas can cause small, damaging explosions inside the engine called knock. While the car's computer can compensate, it does so by making the engine run less efficiently. You're essentially downgrading your car's performance to save on fuel cost.

[LaCamila]

Think of it like this: you wouldn't put low-grade oil in a high-performance engine. Fuel is the same. Cars that demand premium are engineered for a specific level of performance and cleanliness. Using a lower grade can lead to carbon buildup on valves and inside the combustion chamber over time. This isn't an immediate catastrophe, but it slowly degrades performance and can cause expensive problems down the road. Sticking with premium is a form of preventative maintenance.

[DelLila]

Check your owner's manual or the label inside your fuel door—that's the final authority. If it says "premium required," you must use it. If it says "premium recommended," you have a choice, but you'll get the best performance and fuel economy with premium. Many modern turbocharged engines from brands like Ford EcoBoost or Hyundai fall into the "recommended" category. You can run them on regular, but you'll feel a difference when you accelerate.