Challenger MT665B vs John Deere 8420T
Side-by-side specs comparison
Verdict by the numbers
- The Challenger MT665B is more powerful than the John Deere 8420T: 290 HP versus 284 HP (+6 HP, +2%).
- The Challenger MT665B is the more recent model: production started in 2005, versus 2002 for the John Deere 8420T.
- The Challenger MT665B offers a higher rear lift capacity: 7076 kg versus 6885 kg.
Full specs comparison
| Challenger MT665B | John Deere 8420T | |
|---|---|---|
| Power | 290 HP | 284 HP |
| Production years | 2005–2008 | 2002–2005 |
| Fuel | Diesel | — |
| Cylinders | 6 | — |
| Displacement | 8.4 L | 8.1 L |
| Drive | 4WD | — |
| Transmission | CVT | Power shift |
| Gears (fwd/rev) | 18 / 9 | 16 / 4 |
| Rear lift capacity | 7 076 kg | 6 885 kg |
| Wheelbase | 307 cm | — |
| Length | 523 cm | — |
| Cab | Yes | Yes |
Frequently asked questions
Which is more powerful, the Challenger MT665B or the John Deere 8420T?
The Challenger MT665B is more powerful than the John Deere 8420T: 290 HP versus 284 HP (+6 HP, +2%).
Which is more recent, the Challenger MT665B or the John Deere 8420T?
The Challenger MT665B is the more recent model: production started in 2005, versus 2002 for the John Deere 8420T.
Which has the higher lift capacity, the Challenger MT665B or the John Deere 8420T?
The Challenger MT665B offers a higher rear lift capacity: 7076 kg versus 6885 kg.

