While most drivers know to watch for unusual performance issues or listen for strange sounds, unexpected odors coming from your car could also be signs of auto repair problems. Look out for the following smells, and take your vehicle to a professional as soon as you notice one.

Scents That Indicate You Need Auto Repairs

1. Must

A musty odor coming from your vents means mold has formed in your car's air conditioner. This occurs when moisture collects on the system's evaporator. Running the fan without the A/C can help eliminate this mildew growth, but if the smell doesn't go away, it could mean there's a clog in your system's drain tube. Alternatively, water may have leaked into the passenger cabin and gotten the carpets wet.

2. Rotten Eggs

A sulfuric rotten egg smell is caused by a catalytic converter that's going bad. This typically occurs when a problem with the emissions system makes the part overheat and stop processing hydrogen sulfide properly. A failing catalytic converter can also reduce accelerating power and engine performance, so you should have it inspected right away.

3. Burning

A burnt oil smell often occurs when your engine oil runs low or the engine begins to overheat. This could lead to significant engine damage, so be sure to follow oil change guidelines and fix leaks promptly. Other causes of a burning smell include overheated brake pads or a worn clutch plate. When these components need to be replaced, the burning smell will often be accompanied by a scraping or squealing noise when you apply the brakes or change gears.

Whether you need routine car maintenance or more intensive auto repair, you can count on H & S Tire & Auto Center in Wentzville, MO. In business since 1977, their ASE-certified auto mechanics provide personal, friendly service that’ll help you get back on the road in no time. To learn more about their services, visit them online or call (636) 327-5225.