Challenger’s four-wheeled Terragator 845 now comes with a stepless CVT gearbox and Sisu AdBlue engine.

Most commonly kitted out with either 18cu m slurry tanker or 15cu m Tebbe muckspreader body, the specialist application tractor gains a Vario transmission from Agco sister company Fendt and a 398hp 8.4-litre power-plant from its Scandinavian sibling Sisu.

Although it is technically an artic-steer machine, the rear axle pivots on a turntable arrangement so that it crabs up the field with all four wheels running on fresh ground while the injector or dribble-bar follows behind in a straight line. 

Agritechnica 2011