Do all AMG cars require 98-octane fuel?

[MacEleanor]

AMG cars require 98-octane fuel, and it is essential to choose the correct gasoline grade; otherwise, it may lead to engine knocking and reduced power output. Below is an extended explanation: 1. Introduction to different grades: Gasoline with different octane ratings has varying levels of octane. Higher-grade gasoline has a higher octane value. Gasoline with higher octane values also has better stability. 2. Knocking: If the gasoline's stability is insufficient, the engine will experience knocking. Knocking occurs during the compression stroke when the engine's intake and exhaust valves are closed. At this time, the engine's piston moves upward to compress the combustible mixture. The temperature and pressure of the compressed combustible mixture will increase. If the gasoline's stability is poor, the combustible mixture may ignite. The ignited combustible mixture will push the piston downward while the piston is moving upward, which will affect the engine's power output and fuel economy.