Too much transmission fluid can cause foaming or shifting problems. Check the level using your vehicle’s exact procedure, and correct it if it’s high. Transmission fluid level checks can be ...

The Performance Tool W1 is our top pick for most drivers because its 20-inch, four-way design offers leverage and several socket sizes. Check that a socket fits your vehicle’s lug nuts, and use a ...

In a tire size such as P225/65R17 100T, 225 is the width in millimeters, 65 is the sidewall height as a percentage of width, R means radial construction, and 17 is the wheel diameter in inches. Check ...

Check all tires while cold and inflate them to the pressure on the driver-door placard. Then follow your owner’s manual to reset or calibrate the TPMS. If the light flashes, returns, or says “Service ...

A flashing DSC light usually means the system is actively regulating traction. A steady light or “DSC OFF” message can mean the system is disabled, initializing, or has a fault. Check your BMW’s ...

A clogged catalytic converter cannot usually be cleared with an additive or hard driving. Confirm restriction with a proper test and fix the cause, such as a misfire or oil burning, before replacing ...

These problems can produce similar symptoms, so appearance, sound, or a trouble code alone is not enough to confirm a clog. For example, P0420 means the computer detected catalyst efficiency below its ...

A professional car A/C recharge typically costs about $239–$369 in current U.S. estimates, before any leak repair. The price depends on the vehicle, refrigerant, and location. If refrigerant is low, ...

Most airbag lights cannot be reset reliably without reading and repairing the stored SRS fault. Use a scanner that can access the airbag module, fix the cause, then clear the code using the vehicle’s ...

If you’re trying to track down a problem with your car, an automotive scan tool can make the job a whole lot easier. These tools pull detailed data straight from your vehicle’s computer, giving you ...

The Yokohama Avid Ascend GT Touring is our top all-season tire pick. Check the available size for your vehicle and compare the other tires for wet grip, tread life, comfort, and winter performance.

The Kobalt Portable Air Compressor is our top tire inflator pick. If you’re choosing one for your car, compare its size and power source with the other inflators, and consider how often you’ll use it.