The 2021 Buick GL8 Land Business Class 652T Comfort Edition showcases high reliability. It's outfitted with a 2.0T engine paired with a 9 - speed automatic transmission, known for their technological maturity and smooth power delivery. During normal maintenance and use, the likelihood of engine and transmission malfunctions remains low. While some users on the internet have reported minor glitches with Buick models, these issues are manageable and can be easily addressed at a reasonable cost. This particular vehicle has a well - documented maintenance history at 4S stores, and comes with insurance records, maintenance logs, meter - reading reports, and third - party inspection certificates, ensuring full transparency of its condition.