Can Mercedes-Benz Use 92 Octane Gasoline?

2 Answers
SanIsaac
07/29/25 4:39pm
Mercedes-Benz can use 92 octane gasoline. Precautions for refueling: Choose to refuel when the temperature is relatively low; If the car is not used for a long time or used infrequently, keep a small amount of fuel; Avoid refueling when the tanker is unloading; Turn off the engine when refueling a gasoline car. Models under Mercedes-Benz include: Mercedes-Benz GLS, Mercedes-Benz GLE, Mercedes-Benz GLC, Mercedes-Benz GLA, Mercedes-Benz CLA, etc. Taking the 2021 Mercedes-Benz GLS as an example, it is a mid-to-large-sized car with body dimensions of: length 5214mm, width 1956mm, height 1823mm, wheelbase 3135mm, and a fuel tank capacity of 85L.
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SanAdrian
08/12/25 2:19pm
I've been using my Mercedes for long-distance drives for several years, and I usually prefer 95-octane gasoline because 92-octane has poor anti-knock performance. After filling up with 92, the engine makes a rattling sound, which is knocking. Last time, the gas station ran out of 95, so I had to use 92 as an emergency measure. It felt like the car had less power and consumed more fuel. Using it long-term would definitely damage the engine. Mercedes engines have a high compression ratio and are tuned for high-octane fuel, as clearly stated in the manual—don’t just use lower-grade fuel. During regular maintenance, I even asked a technician, and he said using the wrong fuel could damage sensors, cause emission issues, or even lead to expensive repairs. For safety reasons, I always stick to the recommended fuel grade, especially on highways, where a breakdown could be a major hassle.
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