What octane gasoline should a Mercedes-Benz use?

[Adalynn]

Mercedes-Benz uses 95-octane gasoline. Gasoline is a volatile and flammable hydrocarbon mixture liquid derived from the distillation, cracking, or pyrolysis of petroleum, and it is used as fuel. Taking the Mercedes-Benz C-Class 2021 model as an example, its body dimensions are: length 4784mm, width 1810mm, height 1457mm, wheelbase 2920mm, fuel tank capacity 66 liters, and the body structure is a 4-door 5-seater sedan. The Mercedes-Benz C-Class 2021 model is equipped with a 1.5T turbocharged engine, with a maximum power of 115kW and a maximum torque of 250Nm, paired with a 9-speed automatic transmission.

[GarrettFitz]

I've been driving a Mercedes for several years, and this is quite important. Mercedes generally requires 95-octane or higher gasoline, such as 98-octane. My fuel tank cap clearly states 95, and the owner's manual also emphasizes that using fuel below 95 octane may damage the engine. Higher-octane gasoline has better anti-knock properties, and since Mercedes engines have high compression ratios, using lower-octane fuel can cause knocking, which over time can damage pistons and spark plugs. Once, I had to use 92-octane fuel at a remote gas station, and I immediately noticed the engine sounded muffled and acceleration was sluggish. So now, I'd rather spend a bit more to stick to the manufacturer's standards. During routine maintenance, the technicians also remind me that the money saved from using the wrong fuel isn't worth the repair costs later.

[DiJohn]

As frequent visitors to auto repair shops, we've seen too many cases of Mercedes-Benz fuel issues. The key is to check the fuel cap or owner's manual specifications, which usually require 95 octane or higher. High-octane gasoline has better anti-knock properties that match Mercedes engines' high-temperature and high-pressure working conditions. We've handled numerous repair orders for engine knocking caused by prolonged use of 92 octane fuel, with repair costs often exceeding tens of thousands. Some new Mercedes GLE models even require 98 octane - using the wrong fuel may trigger warning lights. In emergencies when lower octane fuel must be used, dilute it as soon as possible. Continuous use of low-octane fuel for three fill-ups can easily cause carbon buildup. Remember, Mercedes are precision machines where fuel quality directly impacts engine lifespan.