What are the reasons for the increased engine noise in a car?

[StGabriela]

The reasons for the increased engine noise in a car are: 1. Prolonged use of the vehicle can lead to incomplete fuel combustion in the engine, resulting in carbon buildup. It is essential to clean the engine carbon deposits promptly; 2. The engine mount is designed to reduce vibrations generated during engine operation. Over time, the mount may age or become loose, leading to increased engine noise. If the engine mount shows signs of aging or loosening, it should be replaced immediately; 3. It could be due to using different types of engine oil during routine oil changes, causing a mismatch between the oil viscosity and the engine requirements. Insufficient lubrication can lead to excessive engine wear. Therefore, when changing the engine oil, always use the same brand of oil and avoid mixing different types.