
The reasons for the loud engine noise in the Buick New Excelle are: 1. Excessive oil viscosity; 2. Loose belt; 3. Overheating coolant temperature; 4. Clogged throttle body or fuel injectors. The Buick New Excelle is a compact car under SAIC-GM Buick, with body dimensions of 4609mm in length, 1798mm in width, 1486mm in height, and a wheelbase of 2640mm. It has a fuel tank capacity of 44 liters and features a 4-door, 5-seat sedan body structure. The Buick New Excelle is equipped with a 1.3T turbocharged engine, paired with a 6-speed automatic manual transmission, delivering a maximum horsepower of 163 PS and a maximum power output of 120 kW.

After driving the Buick Excelle for many years, I've found that common causes of loud engine noise include insufficient or aged engine oil leading to poor lubrication, which increases friction noise between parts; issues with the exhaust system, such as a damaged muffler or loose connections, can directly transmit noise into the cabin; a loose or worn belt may produce squeaking sounds during operation; a clogged air filter restricts airflow, causing the engine to whine; and excessive carbon buildup in the engine or large piston clearances can result in a humming noise during acceleration. Ignoring these issues can lead to increased fuel consumption and even engine damage. It's advisable to start troubleshooting with an oil change, as regular maintenance can prevent potential problems, and a comprehensive inspection at a professional shop is highly recommended.

My Excelle also had loud noise issues before. Common culprits include low-quality or insufficient engine oil – inadequate lubrication leads to friction sounds; cracked exhaust pipes or mufflers allowing unfiltered noise to escape; aged and loose fan belts creating whirring noises; clogged air filters disrupting smooth airflow; or valve wear/ignition system problems causing shaking with abnormal sounds. Unresolved, these may damage components, increase fuel consumption, and pose risks. Regularly listen to engine sounds and change oil every 5,000 km to prevent many issues. When noises occur, first check simple items like oil levels – for complex cases, seek professional repair.

I often encounter engine noise when driving my Excelle, mostly due to untimely oil changes or high viscosity, poor lubrication leading to loud noise; exhaust pipe leakage or muffler damage; belt wear and looseness causing operational noise; clogged air filter making intake difficult; increased cold start noise due to carbon buildup. Ignoring these issues can increase fuel consumption and risk of failure. It is recommended to conduct regular inspections and maintenance, such as checking the oil level yourself, and seek professional repair when necessary.


