I have been a customer of Quality Tune Up in Fremont for more than 25 years. Mark and his team have always been professional and courteous with both me and my family. If they could not solve a problem or provide the appropriate solution, they would recommend another shop to do so. To date, I have never had a negative experience at Quality Tuneup in Fremont, and will continue to use them for both my new and used car service activities.