What Causes Loud Engine Noise in Small Cars?

[VonCassandra]

There are several reasons for excessive engine noise in cars: Noise caused by acceleration: The best way to determine if the noise is normal is to compare it with previous sounds you've heard. If the overall vehicle sounds excessively loud, it indicates a problem. Belt noise: This usually manifests as squeaking or screeching sounds. Belt noise may indicate worn or loose belts. It can also occur when one of the pulleys the belt runs on starts to fail. When the belt no longer moves smoothly along the pulley, it creates noise during car acceleration. Exhaust system noise: The exhaust system includes the muffler, resonator, catalytic converter, and headers/downpipe. The exhaust system carries exhaust gases from the front of the car to the rear. Excessive engine carbon buildup: Too much carbon buildup in the throttle body can cause increased engine noise.