The 2025 Suburban comes standard with a robust 5.3-liter V8 engine delivering 355 horsepower and 383 lb-ft of torque. For those who crave more, a 6.2-liter V8 producing 420 horsepower and 460 lb-ft of torque is available, offering thrilling performance for towing and highway driving alike. A 3.0-liter Duramax® turbo-diesel inline-six is also offered, providing 277 horsepower and an impressive 460 lb-ft of torque, ensuring excellent fuel efficiency and long-range capability.
All engines pair with a smooth 10-speed automatic transmission, delivering refined shifts and consistent power delivery. Drivers can choose between rear-wheel drive and available four-wheel drive to suit their driving preferences. The Suburban’s fuel efficiency remains competitive for its class, with the Duramax diesel option excelling for long-distance commuters.










