You should generally wax your car every three to four months to keep the paint protected and shining well. This frequency provides the best balance of protection and appearance for most vehicles. Some people wax their cars twice a year, especially if the car is kept in a garage and not exposed to harsh weather, but waxing every three months is often recommended for more protection, especially if the car is parked outside or exposed to tough conditions. Waxing twice a year is considered the minimum, but waxing four times a year or every three months enhances protection against elements like UV rays, rain, snow, and road salt, maintaining the clear coat and preventing fading, rust, and discoloration. Over-waxing can cause build-up or clouding but typically won't harm paint if done about every three months. In summary:

• Minimum: Twice a year (spring and fall)
• Ideal: Every three to four months (four times a year)
• More frequent (monthly or every two months) if exposed to harsh winter conditions or intense sun

This schedule helps preserve your car’s paint, retain resale value, and keep your car looking its best.