The Challenger 800MT series crawler tractor was introduced into Fendt’s lineup in 2017 as the 1100 MT series with relatively minor changes. In 2020, Fendt unveiled the 1100 Vario MT tractors, which featured a stepless transmission and structural improvements in many other areas to meet Fendt’s requirements. The engines were now MAN 15.2- and 16.2-liter units, offering significantly higher maximum torque than the 1100 MT’s AGCO Power engines. The maximum power was reached already at 1400 rpm. The engines included a hydraulically driven cooling fan, variable geometry turbocharger, urea injection, cooled exhaust gas recirculation, oxidation catalyst, and particulate filter.

The transmission had two hydraulic pumps, one of which could be disengaged to save fuel when the load was sufficiently low. The hydraulic variable displacement pump produced either 220 or, with both pumps, 440 liters per minute. The center rollers in the undercarriage were hydraulically suspended. The hitch could pivot 28 degrees to either side during turns, and the lift arms could move 12 degrees. The cab was now the same Fendt proprietary cab as in the 900 MT. The Vario terminal had a size of 10.4 inches.

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