We have just sold our Jupiter a few days ago. I rode it for almost 2 years but there were some problems with it those I am mentioning below:
Biggest problem I faced during riding was it had bad roadgrip. It slipped a lot while the time of riding and I was afraid of it. And not only on turns I faced that problems on straight roads too, even in the little muddy road it slipped. I myself got slipped with it but I was lucky to wore helmet that time.
The side pedals used by the person sitting at back was jammed, that caused a lot of problems while riding double seater with someone.
Pickup is not so good.
But there were some pros to it like the fuel tank is at the back so you don’t have to open the seat while to get your fuel tank filled. And also it got nice mileage. But still there is a risk for it to get slipped that is more than other scooters.