The 2018 Cadillac XT4 is a reliable used car with a proven reliability track record, with no widespread critical mechanical issues reported for its 2.0T engine and 9-speed transmission. Routine small maintenance (oil and filter change) costs approximately $131, while the estimated total maintenance cost for 60,000 kilometers (about 37,282 miles) is around $2,081. This used vehicle has passed a professional third-party inspection, confirming it has no history of major accidents, fire, or water damage, with minimal wear and tear. Regular upkeep focuses on basic items like brake pad replacement and fluid checks, which are cost-effective to service—plus, pairing it with the best extended warranty for used cars can further safeguard your investment if you choose.