Hi, my name is Bill Mertz, owner of MasterTech Auto repair serving Plano, Allen, Richardson and McKinney, Texas. Over the years I have been surprised and frankly ashamed of some of the dirty tricks that go on in our industry. Many of these tricks can be avoided by an educated shopper. So whether you use our service or not, here are 7 questions to ask any auto repair shop before you let them service your vehicle.