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Read articles →An owner who runs both machines on his farm does a side-by-side walkthrough of a 2010 John Deere 4720 and a 2020 4066R, cataloging a decade of changes: hitch assist, battery relocation, entry steps and grab handles, loader numbers, exhaust routing, and cab ergonomics. He's candid that the two are remarkably similar overall. Best for current 4-series owners or shoppers weighing a newer model against an older one.
An owner-operator sharing firsthand impressions from working with both tractors on his own farm, posted by the RMSpeltz Farm Homesteading channel.
The 4066R has a side port exhaust, which the owner prefers, while the 2010 4720 has a downward pointing exhaust that can blow dust back up around the tractor.
The 2010 4720 reviewed here did not have hitch assist, though the owner notes the 4720 series got that feature toward the end of its generation.
On the 4066R the battery is next to the loader suspension ball, while on the 4720 it is down at the bottom of the engine bay where debris and water collect.
The owner says they are very similar overall, with the same frame, body style, cab layout, air conditioning, radio, and tires, with mostly cosmetic and ergonomic changes.
