The Dirtiest Car Competition is being hosted by WildWater Express (Southern California) and Ocean Express Car Wash (Houston, TX) on March 28 in celebration of National Car Wash Day.
The winner of each challenge will win a year of FREE car washes.
Here’s how local residents can enter:
- Follow @WildWaterExpressCarWash or @OceanExpressCarWash on Instagram.
- Post a photo of your vehicle on Instagram & tag your local Car Wash.
- One winner from WildWater Express and one winner from Ocean Express will be announced on National Car Wash Day (March 28th).
The prize: The SoCal winner will receive FREE Ultimate washes from any WildWater Express location for one year. Additionally, the Houston winner will receive FREE ‘The Works’ washes from any Ocean Express Car Wash location for one year.
When is National Car Wash Day?
National Car Wash Day is celebrated twice a year, on March 28 and July 14, by offering car owners nationwide a chance to take advantage of special deals, participate in community events, and enjoy a car wash membership that keeps their vehicles in pristine condition at many car washes across America. Whether you’re a car wash owner or car wash enthusiast, National Car Wash Day is the perfect occasion to join the festivities and discover the myriad benefits.

