What Causes Engine Noise to Be Heard Inside the Car?

[DelAthena]

Inability to adapt to new oil viscosity, poor sound insulation, insufficient coolant, and abnormal shock absorbers can cause engine noise to be heard inside the car. Inability to adapt to new oil viscosity: After prolonged use, the engine oil in a car becomes thinner, and carbon deposits accumulate. When new oil is replaced, the engine may struggle to adapt to the oil's viscosity, causing higher RPMs and resulting in louder engine noise. Poor sound insulation: If the car's engine sounds normal when heard from outside but appears noisier when sitting inside, it indicates poor sound insulation in the car. Insufficient coolant: In low temperatures, insufficient coolant can also lead to increased engine noise. Abnormal shock absorbers: Issues with the car's shock absorbers can also cause the engine noise to become louder. Solutions for hearing engine noise inside the car: Inability to adapt to new oil viscosity is a normal phenomenon and will resolve after driving for some time. Poor sound insulation requires checking the car's sealing strips; if they are found to be aged, they need to be replaced. After replacement, test the effect again. Insufficient coolant requires timely replenishment. Abnormal shock absorbers need to be inspected or replaced at a repair shop.

[RiverLee]

There are quite a few reasons why you might hear engine noise while driving. It could be normal noise, like the engine roaring a bit when accelerating, especially at high speeds or going uphill. If there are abnormal sounds, there might be an issue—a leak in the exhaust system can cause a popping noise; a loose or worn belt might squeal continuously; or a broken engine mount can make the car shake, transmitting drum-like sounds into the cabin. I’ve personally experienced this—last year, my old sedan had this issue, and after inspection, it turned out to be worn soundproofing material and a belt problem. It cost a few hundred bucks to fix before it quieted down. To be safe, it’s best not to delay and get it checked at a professional repair shop sooner rather than later—safety first.

[PaisleeLynn]

I've been driving for over a decade and consider engine noise quite normal. Sometimes it's perfectly fine, especially during cold starts when the engine grunts a bit while warming up. But if the sound becomes excessively loud or accompanied by strange noises like humming or metal grinding, you should be cautious – it could be due to a hole in the exhaust system, a loose pulley, or a clogged air filter. Once, during a long-distance trip, my car suddenly got much louder, which scared me into pulling over immediately. After towing it to the shop, we found the fan belt needed replacing. Remember, cars require maintenance just like people do; paying attention to sound changes can help avoid major repair costs.

[SanKimberly]

As a car enthusiast, I find engine noise quite normal – the roaring sound in sports cars is like music! But if a regular family car has noticeable noise, something might be wrong. Possible reasons include aging soundproofing materials letting sound through, or a loose belt causing squeaking; damaged engine mounts can transmit vibrations into the cabin like an earthquake. Regular air filter cleaning and belt inspections can help reduce such occurrences.