What Type of Fuel Should I Use in My Mercedes-Benz?

Are There Mercedes-Benz Models That Require Diesel Fuel?

Some Mercedes-Benz models are equipped with diesel engines that require ultra-low sulfur diesel (ULSD). This fuel type complies with emissions regulations and helps protect the engine from premature wear. Using the correct diesel fuel is essential to maintain peak performance and longevity.

What Happens If I Use Lower-Octane Fuel in My Mercedes-Benz?

Using regular gasoline instead of premium can negatively impact performance and may lead to potential engine issues. Regular fuel ignites more easily under pressure, causing improper combustion cycles, which may result in knocking or pinging sounds. Long-term use of lower-octane fuel can lead to:

• Carbon buildup
• Voided warranty
• Increased engine wear
• Reduced horsepower and efficiency

What Are the Consequences of Using the Wrong Fuel Type?

Accidentally filling a gasoline-powered Mercedes-Benz with diesel or vice versa can cause severe engine damage. Diesel engines rely on high compression, whereas gasoline engines use spark ignition. Using the wrong fuel can result in misfires, clogged fuel lines, and expensive repairs. If the incorrect fuel is added, do not start the vehicle. Contact us at the Mercedes-Benz of Scottsdale service center immediately to prevent further damage.

Can I Use Alternative Fuels in My Mercedes-Benz?

While ethanol-blended gasoline (E10) is generally safe, higher ethanol concentrations like E85 are not recommended for most models. Synthetic fuels may be a viable alternative, but they require manufacturer approval. Using unapproved fuels can lead to fuel system corrosion and warranty issues. Fuel concerns are eliminated for drivers of Mercedes-Benz electric vehicles (EVs), such as the EQ lineup, as these models rely on battery-powered electric motors for an emission-free driving experience.