Timswi I have been looking at the Polaris Ranger 400 which is very similar to the Kubota. Both have about the same 450cc engine but the Kubota is 15 hp and the Ranger is 28hp. Kubota has this engine tuned way down. The only plus for us is your never gonna wear it out since it never breaks a sweat. Maybe it has to be like this for the HST transmission. Just dont be in a hurrry and everything is fine. Need to get there you start thinking about the 40mph Ranger 400.