John Deere Z425 vs Kubota F3990

Verdict by the numbers

• The Kubota F3990 is more powerful than the John Deere Z425: 39 HP versus 23 HP (+16 HP, +70%).
• The Kubota F3990 is the more recent model: production started in 2014, versus 2007 for the John Deere Z425.
• The Kubota F3990 is heavier: 778 kg versus 292 kg for the John Deere Z425.
• The Kubota F3990 has the wider mower deck: 60" versus 48".