When assessing reliable used cars like the 2016 Cadillac ATS-L, potential buyers should note some reported common problems. While the 2016 Cadillac ATS-L offers robust performance, these common issues include transmission shudder or hesitation at speeds of 30-40 km/h, rear axle differential oil leaks, and occasional AC compressor failures. However, this specific used car has passed a professional inspection confirming no major accidents, fire, or water damage. The owner states it has been well-maintained, and regular servicing can help mitigate potential issues. Spare parts are widely available, including easily sourced used car parts for any necessary replacements, and routine maintenance costs are reasonable for its luxury performance class. For those looking to buy used cars that balance performance and peace of mind, understanding these details helps make an informed decision.