rinowish wrote:I "think" the green ones are the older? and blue are the newer? (maybe I have that reversed)
That is reversed. The blue ones are older and the green ones are the newer ones. I have also seen the newest one which looks black on the website but is apparently actually gray. I think the gray one is a walmart exclusive and is apparently lacking in some features such as actual headlight covers (uses stickers instead).
When I got mine (an older blue one) it had a broken gear but in talking to the guys at mltoyz, I learned that the new gearbox is redesigned and is supposed to be stronger so maybe they have fixed that issue. I have mine over-volted with a turbo button to 18v and have not had any issues since I replaced the broken gear.
The first ones also had a steering issue that has been fixed. The steering rod would get stuck in the rack and pinion in the bottom and wouldn't turn easily. That can be fixed if you research the old forum.
I would recommend it. My son is almost 4 but is tall for his age and about 45lbs; he loves it and fits it very well with the seat all the way back. Hope this helps!