What are the symptoms of damaged engine mounts in a car?

[LeJeffrey]

The symptoms of damaged engine mounts in a car are: 1. Obvious engine vibration when reversing; 2. Noticeable engine vibration when starting the car; 3. Significant engine vibration when the engine is cold, which improves after warming up; 4. Steering wheel vibration during idle, with noticeable vibration in the brake pedal; 5. Abnormal noises from the engine when going over speed bumps. The maintenance methods for the engine include: 1. Using qualified engine oil; 2. Using qualified coolant and antifreeze; 3. Regularly cleaning the radiator scale; 4. Regularly removing engine carbon deposits; 5. Regularly replacing the car's three filters; 6. Maintaining a reasonable engine speed.