Why is the noise level so high in the new Corolla?
1 Answers
The reasons for the high noise level in the new Corolla are as follows: 1. Fuel issues, incomplete combustion leading to unstable engine idle speed and increased noise. 2. Lubricating oil and gear oil problems: The engine lubricating oil and gearbox oil become thicker, increasing viscosity, causing unstable idle speed and necessitating higher idle speeds, which makes the car sound louder at idle. Thickened lubricating oil, along with increased cylinder-piston clearance and compression leakage, worsens combustion. 3. Engine damage can also lead to increased noise. Additional information: Taking the Corolla Hybrid 2020 1.8L E-CVT Comfort Edition as an example, this is a compact 4-door 5-seater sedan under FAW Toyota, with dimensions of 4635mm in length, 1775mm in width, and 1470mm in height, a wheelbase of 2700mm, and a maximum engine torque of 142 Nm.