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Why Do Luxury Cars Need Premium Gas?

Premium gas vs. regular—what’s best for your luxury car? Find out why Mercedes-Benz and other high-performance vehicles need higher octane fuel for optimal performance and longevity.

When you invest in a luxury vehicle like a Mercedes-Benz you are choosing a premium experience. With an elegant interior design, cutting-edge infotainment and safety systems, and advanced engineering, Mercedes delivers an exceptional driving experience where luxury and comfort meet superior performance. 

Whether you are a current Mercedes owner or considering purchasing a new vehicle, you may be wondering — do luxury cars need premium gas? Read on to learn why premium gas is recommended and how it helps preserve your vehicle’s performance and value.

Understanding Octane Rating

By now, you’re likely used to seeing multiple fuel options at the pump. While each gas station may brand its octane ratings differently, they are required to display the numbers. Typically, you’ll see the octane rating printed on the button you press to select your fuel:

  • Regular: 85–87
  • Midgrade: 89–90
  • Premium: 91 or above

Not sure what octane rating your car needs? Check for a label inside your gas cap door, on the gas cap itself, or refer to the owner’s manual.

The octane rating of gasoline indicates its ability to resist premature ignition — also known as knocking — which occurs when the air-fuel mixture ignites on its own rather than from the spark plug. This uncontrolled combustion can cause a pinging or “knocking” sound, hence the name.

Why Is Knocking Bad?

Knocking causes a lot more than an annoying noise – it can cause damage that may cost you more money in the long run. Using an octane lower than the manufacturer recommends can cause:

  • Engine and exhaust system damage: Knocking increases wear and tear on pistons, cylinder walls, spark plugs, and the catalytic converter — leading to repairs and replacement parts.
  • Reduced fuel efficiency: High-performance engines are designed for higher octane fuel, which burns more efficiently. Using regular gas can lower fuel economy by 2–5%, resulting in more frequent fill-ups.
  • Decreased performance and slower acceleration: Regular gas can reduce horsepower, cause noticeable lag in acceleration, and lead to a poorer driving experience.
  • Increased emissions: Incomplete combustion can increase pollution and may even cause your vehicle to fail emissions testing.

Is Premium Gas Worth It for Luxury Cars?

Absolutely! For luxury and performance cars, premium gas isn’t just a recommendation – it’s a requirement for optimal performance, fuel efficiency, and protecting your investment. In the long run, using the right fuel helps avoid costly repairs, maintain resale value, and ensure the car drives as it was engineered to. If you’ve invested in a luxury vehicle, treating it right with premium fuel is a small price to pay for long-term reliability and performance.

If you’re choosing between a performance car that requires premium vs. a car that runs on regular gas, the choice depends on your priorities. If you enjoy performance and want longevity, a Mercedes with premium gas may save money overall. If you only care about upfront costs, a basic commuter car on regular gas might be a better fit for you.

Ed Hicks Imports Can Help Protect Your Investment

Your Mercedes-Benz was designed for premium performance, and premium gas keeps it running at its best. If you want to maximize efficiency, protect your engine, and maintain long-term value, following manufacturer fuel recommendations is a smart investment.

Need expert advice on caring for your luxury vehicle?
Visit Ed Hicks Imports for professional service, maintenance, and tips on keeping your Mercedes-Benz in peak condition. Schedule your next appointment today and let our team help you get the most out of your luxury vehicle!

Ed Hicks Imports

3102 South Padre Island Drive
Corpus Christi, TX 78415

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