Autoxtend is a family owned independent automotive shop in North Knoxville. We have ASE trained technicians with over 200 years of combined automotive experience providing quality repairs on domestic and import cars and light trucks. We have a great staff serving a wonderful community. Autoxtend is a family owned independent automotive shop in North Knoxville. We have ASE trained technicians with over 200 years of combined automotive experience providing quality repairs on domestic and import cars and light trucks. We have a great staff serving a wonderful community.