Qìchē xiāoyīnqì huài le, páiqì shēng biàn de hěn xiǎng.
The car muffler broke, and the exhaust noise became very loud.
Tips
usage
消音器 covers both a gun silencer/suppressor and a vehicle muffler. Context clarifies which is meant. For firearms specifically, 消声器 (xiāoshēngqì) is also used.
