Want a used car that works? In Consumer Reports’ latest ranking for used cars, the Elon Musk-run automaker came dead last in terms of reliability, trailing by over forty points from the top spot on a scale between 0 and 100. CR’s tests focused on models that are between five to ten years old. CR calculated the reliability rating based on a survey where users reported problems about their cars, which in all involved more than140,000 cars from the 2016 to 2021 model years. According to CR, Tesla’s most reliable new car, the Model Y, boasted a stellar score of 81.