Professional, competent service. Performed B1 maintenance service on a Mercedes C300 and removed and replaced secondary air induction pump. I was kept informed of services needed and the estimated cost before the work performed. Once approval was given to proceed with the work, services were completed in the time requested. We were called the next day to ensure all was well with the repair. I appreciated the proactive customer service approach and will use Geiling Auto Service again in the future. I am satisfied that the cost was lower than would have been charged by the dealership.