Why can't the car accelerate beyond 60 mph?

[MacAnderson]

Here are the reasons why the car can't accelerate beyond 60 mph: 1. Insufficient engine RPM: The gear is too high, causing drag and lack of power. It is recommended to shift gears above 2500 RPM. 2. Just going uphill: The car is either going uphill or carrying too much weight, making it difficult for the engine to accelerate. 3. Low-speed engine: The engine is a low-speed type, with limited torque and horsepower at high RPMs. 4. Untimely gear shifting: For example, using only 3rd gear to reach 60 mph makes it naturally hard to accelerate further. This can also be caused by faults in the fuel supply system, failure to control fuel pressure or ignition timing as required, or issues with spark plugs and high-voltage wires. Since the condition of spark plugs and high-voltage wires is essential for increasing speed, they should be checked regularly to ensure normal acceleration. Extra attention should be paid to fuel pressure and injection volume, and they should be used properly to prevent acceleration issues.