Find a certified pre-owned Subaru, Hyundai, Kia, Mazda or Porsche in Denver or Colorado Springs from Shortline Auto Group and Porsche of Colorado Springs. All of our certified vehicles come with a great warranty and much more. Our Subaru and Mazda Certified Pre-Owned models come with a 7 year/100,000 mile limited powertrain warranty. Kia and Hyundai Certified Pre-Owned come with a 10 year/100,000 mile limited powertrain warranty. Each vehicle has gone through extensive tests and inspections by a factory certified mechanic. The majority of our non Subaru, Kia, Hyundai, and Mazda pre-owned vehicles at Shortline are covered under our Shortline warranty of 10 year/100,000 mile limited powertrain warranty.