
Based on the technical documentation provided by the manufacturer, the BMW 5 E60 engine is designed for petrol, which has an octane number of 98. However, the motor of the vehicle is able to accurately determine the fuel used for the octane number 91 to 98. Prolonged maintenance on 92 petrol is absolutely safe for the car, because the antiknock control system alone adapts the engine parameters to the quality of the fuel.