We've used Mattie's service dept. exclusively to maintain our 2018 Q5 thus far. Normally, we deal with Joe Chaves; this trip was Jason Costa because it was a Saturday appointment. In all cases, Joe (and now) Jason have conducted business in a courteous, professional manner. Despite that we've never actually met Mattie's service technicians, it's obvious that they too "know their stuff". Kudos to the service team, we're very pleased with your support.