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This is an older model - not sure what year. We got used it when my son was 6 - he's 13 now soooooo...... Yeah.
No issues with it over the years other than a cracked throttle housing after a pretty good get off. I replaced the housing and the grips. Batteries every two years - it'll run for an hour or so depending on load and speed. It's got a speed limiter so you can dial it down if you fear for your kids life. I think it runs 18mph wide open.
It needs batteries and the tires are well loved.
$350 Nesr price.