The 2025 BMW X3 is officially recommended to use RON 95 or higher gasoline in the Malaysian market. However, for optimal performance, it's advisable to go with RON 97 or higher premium fuel. Why? Because high-octane gasoline better suits the high compression ratio design of its turbocharged engine, reducing the risk of knocking and optimizing power delivery.
In Malaysia, gasoline grades are RON 95 and RON 97, with RON 97 being the premium option. While it does cost a bit more at the pump, it offers better combustion efficiency. Sticking with it long-term can help minimize carbon buildup and potentially extend the engine's lifespan.
Now, here's the thing: if you have to temporarily fill up with RON 95, it won't immediately damage the engine. Modern cars, including this Bimmer, are equipped with knock sensors that can automatically adjust ignition timing. But, consistently using lower-octane fuel might lead to reduced performance and increased fuel consumption over time.
For a brand like BMW, which prides itself on driving dynamics, following the manufacturer's fuel recommendations is key to keeping the vehicle performing at its peak. The good news is, RON 97 is widely available at most Malaysian petrol stations, so owners shouldn't have any trouble finding it when they need to refuel.
