Get the Mister clean difference when you have your car washed at our Mister Car Wash Washington Avenue location in Houston, Texas. We are at 3522 Washington Ave, in between the intersection of Center St., Harvard St., Washington Ave and Wagner St. The shop is just a few minutes away from Spotts Park. The store opens at 8:00am-7:00pm from Mondays to Saturdays and 9:00am-6:00pm on Sundays.