The John Deere 6620 Premium transmission listing shows 24F/24R gears and 24-speed. Top travel speed is 24.9 mph forward and 24.9 mph reverse. Transmission options include AutoQuad, PowrQuad Plus, PowrQuad, and PowerShift.
The John Deere 6620 Premium transmission listing includes 24F/24R forward/reverse gears and a 24-speed transmission figure. That is stronger than a vague transmission label because it gives real gear-count detail
Speed note
For travel-speed comparison, the John Deere 6620 Premium is listed with 24.9 mph forward speed and 24.9 mph reverse speed. Forward and reverse speeds are very close in the captured data
Options note
The John Deere 6620 Premium option list includes AutoQuad, PowrQuad Plus, PowrQuad, PowerShift. That gives buyers a few transmission-package possibilities to check before comparing two used tractors
Official information note
Mistakes do happen. Transmission specs can change by year, trim, region, tire size and option package. Please check the operator manual, build sheet and official deere.com website for official information.
