Although vehicle manufacturers issue recalls frequently in order to repair equipment that may present a safety risk, many drivers aren’t aware that their vehicles are affected and fail to get potentially lifesaving repairs. According to J.D. Power and Associates, 1 in 6 vehicles on U.S. roads has been recalled, but not repaired.

When a vehicle is recalled, manufacturers are obligated to send a letter to owners informing them of the defect, any hazards or warning signs associated with the problem, and how to obtain a free repair or remedy. Because millions of vehicle recalls take place every year, it can be difficult to know if your vehicle’s specific make and model year is affected.

To see if your vehicle is subject to a recall, visit the National Highway Traffic Safety Administration’s recall website. You can also visit your vehicle manufacturer’s website to look for information about recalls and sign up for other important safety and health notices.