The engine light on my Mercedes Benz ML350 was coming on. It was about 3:30 pm on Sunday, and I was driving to Scottsdale Arizona the next day for an important meeting so I had to make sure there was nothing wrong with the car. Good luck finding a mechanic on late Sunday afternoon. I came across Mission Viejo Transmission when Googling for an auto repair shop and was pleasantly surprised to find out there are open 7 days a week from 7:00 am to 7:00 pm. Took my car there and they found out my catalytic converter needed some work. The people at Mission Viejo Transmission were very nice and understanding and they fixed the problem while I waited there. I will take my car there again if I ever needed to.