What type of fuel should a BMW 5 Series use?

[DiLila]

BMW 5 Series requires 95 octane gasoline. Below are the detailed explanations: Reasons: Equipped with a turbocharged engine. Turbocharged engines have relatively small compression ratios, but the pressure and temperature inside the cylinders during operation are very high. Gasolines with different octane ratings have varying levels of octane values—the higher the octane rating, the higher the octane value, and the better the fuel's anti-knock properties. 95 octane gasoline has a high octane value. Using gasoline with a lower octane value can easily cause engine knocking, leading to reduced engine performance, damage to engine components, and sluggish acceleration while driving. Therefore, 95 octane gasoline is recommended. Different octane gasolines should not be mixed: Long-term mixing of different octane gasolines can affect the lifespan of the vehicle's ignition system, fuel injectors, and spark plugs, accelerating the need for major repairs. Whenever possible, strictly adhere to the vehicle's requirements for the specified octane rating. Using lower octane gasoline can cause engine knocking, and in severe cases, may lead to bent valves, damage to the valve cover, and other issues.