When assessing reliable used cars like the 2018 Buick GL8 ES 28T Luxury, it generally has good long-term reliability, but some common problems reported in the model line include engine warning light malfunctions (often due to sensor or fuel system issues), electronic glitches in infotainment systems, and occasional suspension noise. However, this specific used car is a one-owner vehicle with a clean accident history (non-major accident, non-fire, non-flood damage) and has passed comprehensive inspections. Minor cosmetic and component checks showed only 1 accident-related flaw and 2 water-detection-related minor observations, which do not affect overall safety or performance. With a current price of approximately $21,000 (a $31,900 savings compared to the original MSRP of $52,800), it offers strong used car values for a well-maintained MPV, making it a smart option if you’re ready to buy used car models that balance quality and affordability.