The Challenger MT665E is a row-crop tractor produced from 2014 to 2020 as part of the MT600E Series by Challenger, a part of AGCO. It features a powerful AGCO POWER 8.4L 6-cylinder turbocharged diesel engine with 290 hp rated power and a maximum of 320 hp. The tractor is equipped with a Techstar continuously variable transmission (CVT) offering infinite forward and reverse speeds. It includes advanced mechanical features such as four-wheel drive, electro-hydraulic differential lock, hydrostatic power steering, and hydraulic wet disc brakes. The cab is standard with air-conditioning and offers optional hydraulic suspension and precision guidance systems. Hydraulics are closed center load sensing with up to 6 valves and 54 gpm pump flow. The tractor hitch supports category III/IVN with a rear lift capacity of 26455 lbs. The rear PTO is independent with 1000/1000E rpm options. Dimensions include a 122 inch wheelbase, 218.6 inch length, and 141 inch cab height, with a shipping weight of 23810 lbs. Electrical system features a 12 volt negative ground with a 240 amp alternator system. The MT665E shares similarities with Massey Ferguson model 8732 and is related to the MT655E, MT675E, and the earlier MT665D models.