Why is the noise level so high in the new Corolla?
3 Answers
The reasons for the high noise level in the new Corolla are: 1. Fuel issues, incomplete combustion leading to unstable engine idle speed and increased noise; 2. The engine lubricating oil and gearbox gear oil become thicker, increasing viscosity, causing unstable idle speed, which requires raising the idle speed, making the car sound louder at idle; 3. Thickened lubricating oil, along with increased clearance between the cylinder and piston, greater compression leakage, and worsened combustion; 4. Engine damage. 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 N·m.
I think the noise issue with the new Corolla is quite common. From a technical perspective, the engine is the main source. Small-displacement engines tend to produce more vibration and noise at high RPMs, especially noticeable during high-speed acceleration. Tires are another problem—the factory-fitted standard tires generate significant friction noise on rough roads, and improper tire pressure can make the noise even worse. In terms of body design, the sound insulation materials used are not thick enough, leading to noticeable wind noise at high speeds, and the sealing around doors and chassis isn't perfect either. These compromises are made to control costs, as the Corolla is positioned as an economical model, and Toyota has cut corners on sound insulation. I'd recommend trying quieter tires or checking engine maintenance, such as whether the oil has been changed—regular upkeep can help alleviate some noise. However, if you prioritize a quiet ride, test-drive multiple options for comparison. Some owners have reported significant improvements after adding extra soundproofing materials.
After driving the new Corolla, I found the noise levels quite bothersome, especially during daily commutes. The engine roars noticeably when starting in the city, sounding as rough as an older car. Wind noise whooshes loudly on highways, making conversations require raised voices—likely due to suboptimal aerodynamics. The tires are even more annoying, producing thumping sounds on uneven roads, with noise worsening as they wear. That said, this car prioritizes affordability with low fuel consumption and minimal maintenance, representing a trade-off. I tried closing windows tighter to reduce wind noise and maintaining proper tire pressure helped slightly. If budget allows, adding trunk soundproofing materials can further reduce noise. Overall acceptability is decent given its family car positioning—you get used to it with time.
