The Challenger MT685E is a row-crop tractor produced from 2014 to 2020 as part of the MT600E Series. Manufactured by Challenger, a part of AGCO, it was built in Jackson, Minnesota, USA. It features a powerful AGCO POWER 8.4L 6-cylinder turbocharged diesel engine with air-to-air intercooler, delivering 340 hp rated power and up to 370 hp maximum power. The tractor uses a Techstar continuously variable transmission (CVT) with infinite forward and reverse gears in two ranges. It includes 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 OptiRide Plus hydraulic cab suspension. Hydraulics are closed center load sensing with 2900 psi pressure and 54 gpm pump flow. The rear hitch is category III/IVN with a lift capacity of 26455 lbs. The rear PTO is independent with 1000/1000E (1.75) type. Dimensions include a 122 inch wheelbase, 218.6 inch length, 141 inch cab height, and a shipping weight of 23810 lbs. Electrical system features a 12 volt negative ground with a 240 amp alternator. The MT685E shares similarities with the Massey Ferguson 8737 model and is related to the MT675E and MT685D models.