A new car noise deserves more attention than the usual “it’ll probably be fine” treatment. Some sounds point to ordinary wear, while others can signal a brake, tire, steering, or engine problem that makes continued driving risky.
The tricky part comes from the sound itself. A squeal does not automatically mean disaster, and a quiet hum does not automatically mean harmless. What matters is where the noise comes from, when it happens, whether the car handles differently, and whether another warning sign appears with it. AAA specifically recommends treating sudden, unusual noises such as grinding, popping, or growling as reasons for immediate attention.