Why is the engine noise loud in the Buick New Excelle?

[SanOscar]

The reasons for loud engine noise in the Buick New Excelle: 1. After a period of use, the effectiveness of the engine oil gradually declines, and the increase in noise at this time is a normal phenomenon; 2. If the engine oil is unsuitable, it can also lead to loud engine noise. The Buick Excelle is another masterpiece launched by the Buick brand, following the new Regal, new LaCrosse, and Enclave, based on the "global platform, European and American technology." It incorporates the dynamic genes that the Buick brand has endowed to mid-size cars, bringing a brand-new five-door coupe driving experience to the mid-size car market. The launch of the Buick Excelle fills the product gap between the new Excelle and the new Regal in the Buick brand lineup, further strengthening and perfecting the Buick brand's product range.

[AnthonyMarie]

I think the issue of loud engine noise in the Buick New Excelle is quite common. As someone who frequently researches cars, I can share some insights. Increased engine noise is often caused by problems with several key components, such as a loose or worn belt creating friction sounds; old engine oil not being changed in time, leading to insufficient lubrication and increased friction; or a clogged intake system, like a dirty air filter, or carbon buildup on the fuel injectors affecting combustion efficiency, which can amplify the noise. Some car owners neglect routine maintenance, and over time, this leads to such issues. I recommend first checking the belt tension and seeing if the engine oil color is cloudy—if necessary, replace the filter. Regular maintenance can effectively prevent noise. If the noise suddenly becomes louder, don’t delay—take it to a professional shop immediately. Safety comes first.

[RachelFitz]

As a long-time Buick owner with over a decade of experience, my new Excelle also encountered engine noise issues before. The sound seemed significantly louder than when the car was new, and upon careful consideration, I realized it was related to driving habits. For instance, frequent start-stop cycles in city traffic jams put greater load on the engine, accelerating component wear; occasionally using substandard gasoline could also lead to incomplete combustion, causing abnormal noises from the exhaust pipe. The lesson I learned is to consistently use the appropriate grade of engine oil and inspect belts and connectors every three months. Now the car runs much quieter. Noise may escape through damaged soundproofing materials, so check if the seals near the hood are loose. Developing a habit of regular maintenance can save a lot on repair costs.

[McJameson]

After driving for so many years, increased engine noise is indeed annoying. From my own experience, louder sounds often stem from simple issues: squeaking due to aging belts, insufficient or dirty oil reducing lubrication, or loose exhaust pipes causing resonance. The checks are straightforward: start the car and listen for unusual noises, check if the oil dipstick level is normal, and inspect the belts for cracks. If problems arise right after maintenance, it might be due to unsuitable oil or incorrectly installed filters. I recommend starting with these basic checks—they don’t take much time. If that doesn’t help, then visit a shop to diagnose the ignition system or sensors with specialized equipment.