Quiz: What is the significance of the ‘redline’ in an engine’s RPM October 6, 2025 by Alex Turner What is the significance of the ‘redline’ in an engine’s RPM gauge? Discover more about Vehicle Engine and Automobile at our home page. A) It indicates the maximum safe engine speed. B) It shows the minimum idle speed of the engine. C) It represents the average speed of the vehicle. D) It measures fuel efficiency under various conditions. Submit Answer
