The G-Series compact hydraulic excavators feature upgraded engines, new cabs and canopies, and an improved climate-control system—the latter using an air-conditioning system that provides more airflow and cooling capacity. The Tier-2-compliant Kubota engine runs cooler and starts easier in cold weather, says Bobcat, and larger machines use a serpentine drive belt that extends service intervals. New cabs are made of formed steel and feature more glass.