Well-appointed interior; abundant seating and cargo space; versatility and toughness; strong towing capacity; comfortable, refined ride; relatively fuel-efficient engines. The Suburban and Tahoe are by-far the best-selling models in their class, and they're tough rivals for the Ford Expedition, Toyota Sequoia and Nissan Armada, among others. These two Chevy models are closely related in most ways, but the Suburban is 14 inches longer in wheelbase and 20 inches longer overall than the Tahoe. The larger dimensions results in a significantly larger third-row seat than in the Tahoe--as well as easier access to it, as well as more cargo space. Compared to other full-size SUVs, the Chevy Tahoe and Suburban stand out for their ride quality and efficient engines. They're also very rugged and versatile, and can be outfitted for off-road toughness, tow ability and interior luxury as needed. Chevrolet claims that the Tahoe is the most fuel-efficient model in the full-size SUV class, thanks to tech such as direct injection and active fuel management and cylinder deactivation.