Imported to the UK From New, Service History, MOT, 2 Keys, Freshly Serviced, 35” BFG Tyres, Apple Car Play, Turns Heads Everywhere - Very Cool Truck. The 2006 Hummer H3 is a robust vehicle. This H3 is the Adventure trim, equipped with a 3.7L petrol engine and a four-wheel-drive drivetrain. The Hummer H3 V6 Adventure offers several advantages. The four-wheel-drive drivetrain makes it suitable for challenging terrains. The 3.7L petrol engine provides a balance of power and efficiency for everyday driving.