Buick is positioned in between mainstream and luxury brands. Most models are upscale and refined, with well-crafted interiors and straightforward infotainment systems. Most Buicks can’t match the latest competitors’ gas mileage, however. As is the case with most car companies, it’s increasingly focused on SUVs. Some Buicks do quite well in our tests. With its small model line, Buick is currently the most reliable domestic automaker.