I used the online appointment scheduler to set up my appointment, and arrived on time: 3:OOpm Saturday. Staffing in the garage was light that day. Even with that, I was checked-in within about 5 minutes after showing the discount coupon on my phone. I waited on the bench provided to customers for my test to be completed. I had been told about 25 minutes, but it took only between 15-20 minutes. Couldn't ask for more! Very efficient in all regards.