The John Deere X166 is a lawn tractor produced from 2018 to 2020 as part of the X100 Series. It features a 18 hp (13.4 kW) Briggs & Stratton 655cc 2-cylinder gasoline engine, a Tuff Torq K46 belt-driven hydrostatic transmission with infinite forward and reverse speeds, and two-wheel drive with manual steering. The tractor has a wheelbase of 48.3 inches, weighs 531 lbs, and comes with a 48-inch mid-mount mower deck. It offers variants including side discharge and integral rear collector models. Electrical system includes a 12-volt battery with 9 amps charging. The X166 was built in Greeneville, Tennessee, USA.