The general recommendation is to wash a car about every two weeks. This frequency helps remove contaminants like tar, road debris, bird droppings, and salt that can harm the car's paint and undercarriage over time. Washing more often may be necessary in harsh climates, such as winter conditions where salt is used on roads, or near coastal areas with salt and sand exposure. Waxing your car regularly can reduce washing frequency by protecting the paint. Also, washing the interior at least as often as the exterior is advised depending on usage.

Summary of Washing Frequency:

• About every two weeks for average conditions.
• More frequent washing in winter or coastal environments to remove salt and sand.
• Less frequent washing if the car is stored indoors or waxed regularly.
• Interior cleaning aligned with exterior washing or more often if needed (e.g., with kids).

Benefits of washing regularly:

• Prevents paint damage and rust.
• Maintains car value and appearance.
• Removes harmful contaminants before they cause lasting damage.

Cautions:

• It is difficult to wash a car too much if done properly.
• Use separate cleaning for wheels to avoid spreading grime.
• Avoid car wash rags that get reused car to car, which may cause scratches.