The question of fuel grade compatibility for the Infiniti Q50 is a common concern among vehicle owners. Fuel grade, often measured by octane rating, represents a gasoline’s resistance to premature detonation or “knocking” within the engine. Higher octane fuels are typically recommended for high-performance engines or those with forced induction, like turbochargers or superchargers. The owner’s manual is the definitive source for fuel recommendations.
Utilizing the manufacturer’s recommended fuel grade ensures optimal engine performance and longevity. Deviation from this recommendation may lead to reduced power output, decreased fuel efficiency, and, over time, potential engine damage. Engine knock, a sign of improper combustion, can accelerate wear and tear on critical engine components. While some modern vehicles possess knock sensors that adjust engine timing to compensate for lower octane fuel, this is not a substitute for using the specified grade.