Located on the rooftop of the Mossy Toyota dealership at 4555 Mission Bay Dr. in Pacific Beach, 92109, Mossy Express Wash is a car wash and detailing operation run by the Mossy Automotive Group, a fifth-generation family business that has served San Diego since 1921. Phil Mossy expanded the family into San Diego in the mid-1980s by purchasing a Nissan dealership in National City, eventually growing the group to fifteen dealerships and roughly 2,000 employees across the county. The wash itself sits in one of Pacific Beach's most recognizable automotive landmarks, directly accessible from Mission Bay Drive near the Garnet Avenue intersection. Services span drive-through soft-brush washes, self-serve bays, touch-free options, and a full detailing menu that includes engine cleaning, headlamp restoration, seat cleaning, and dog hair removal. Free drying cloths and vacuum stations are available to every customer. Monthly membership plans offer unlimited washes with priority access, and the team led by attendant Raul draws consistent praise for attentive service and minimal wait times. Mossy Express Wash operates Monday through Friday from 7 a.m. to 8 p.m., Saturday from 7 a.m. to 7 p.m., and Sunday from 10 a.m. to 6 p.m. The location sits steps from the Mossy Toyota showroom and service department, which itself has earned Toyota's President's Award every year since 2010. Customers who need mechanical service alongside a wash can walk over to Mossy Toyota Service & Parts without moving their car off the property.