What is the engine speed when the car is at 120 km/h?

[ElleFitz]

When the car is at 120 km/h, the engine speed is around 3500 RPM. Under normal driving conditions, the engine speeds at the highest gear are as follows: when the speed reaches 100 km/h, the engine speed is generally around 2800 RPM; when the speed reaches 110 km/h, the engine speed is generally around 3200 RPM. The reasons for high engine speed include: 1. Sudden increase in throttle opening; 2. Fuel injector leakage or blockage; 3. Slippage or damage to the air conditioning clutch; 4. Air intake system leakage; 5. Insufficient engine power output. Solutions for high engine speed include: 1. Adjusting the throttle opening; 2. Replacing the fuel injector, air conditioning clutch, air intake system, or engine. Driving precautions include: 1. Avoid emergency braking and rapid acceleration during the break-in period; 2. Do not overload the car within the first 1000 kilometers of driving; 3. Observe speed limits during the break-in period and ensure moderate speed driving; 4. Avoid driving for excessively long periods, allowing the car time to adjust; 5. Change the engine oil as specified by the manufacturer during the break-in period; 6. Avoid driving at a constant speed for prolonged periods.