20 Cars So Overbuilt They Made Their Engineers Regret It

4. Lexus LS400

The Lexus LS400 stunned the luxury market with its obsessive attention to detail and nearly silent ride. Engineers spared no expense, crafting an engine so smooth and a cabin so refined that rivals couldn’t compete on quality alone.
According to MotorTrend, this pursuit of perfection led to internal debates at Lexus about balancing cost and quality. The LS400’s engineering triumph shifted industry standards—while prompting Lexus to rethink its own bottom line.