What type of gasoline should a BMW 5 Series use?
3 Answers
BMW 5 Series has a fuel tank capacity of 68 liters, and the manufacturer recommends using 95-octane gasoline. The specific refueling process is as follows: 1. First, press the left side of the fuel tank cover to open it. 2. Turn the fuel tank cap to the left to remove it. 3. There is a designated placement area for the fuel tank cap on the fuel tank cover; simply insert it there. 4. Insert the fuel nozzle into the tank to complete the preparation. 5. If the fuel nozzle is automatically cut off for the first time, it indicates that the tank is full. Continuing to refuel will fill the expansion chamber in the tank with fuel. 6. Remove the fuel tank cap and securely fasten it, ensuring it is tightly screwed on. 7. Close the fuel tank cover until you hear a "click" sound to complete the refueling process.
I've always driven a BMW 5 Series, and I remember that using 98-octane gasoline is most suitable. The engine of this car is quite sophisticated, especially the turbocharged models, where high-octane fuel can prevent knocking issues. Last time I tried 95-octane, the power noticeably decreased, and acceleration wasn't smooth. BMW officially recommends 98-octane or higher, and there's usually a sticker on the fuel cap indicating this. Long-term use of lower-octane fuel can easily lead to carbon buildup in the engine, making maintenance troublesome and expensive. When refueling, I suggest sticking to gas stations with stable quality—don't save those few bucks at the expense of your car.
As a car enthusiast, the BMW 5 Series should use 98-octane gasoline because its engine has a higher compression ratio and requires high-octane fuel to prevent knocking. If you use 92 or 95-octane fuel, you may not notice a difference in the short term, but over time it can lead to premature ignition, reduced power, and even engine damage. Check your owner's manual or look up your specific model year online to confirm the recommended fuel—generally, post-fifth-generation models emphasize 98-octane. When changing oil, opt for full synthetic oil to enhance performance, extend engine life, and ensure reliability—safety first.
