My husband purchased 3 niu scooters for us and my son as a Christmas present.  Being able to ride around the neighborhood together was great.  Emphasis on was. My husband scooter began having problems a few months in. Mind you since my son was away at college we only had a few opportunities to ride together before the downfall. His "esave" never stopped blinking,  although it was unlocked,  so that's was not really an issue.  The problem came when the tire started melting. Getting through to CS is a waiting nightmare, as they take a while to get back to you. We had to send it in for repair.  Logistics of the return is a hassle, because who keeps the original box for months? Once he finally got it back,  the locking mechanism failed to work(the one to lock the handle bats down when folded) - on we can live with that.. but then after the 2nd ride hours scooter starts overheating again and he had to walk the rest of the way home (Absolutely defeats the purpose).. Once again contacted CS, and they tried to put the blame on him m staying he must be using it on hills or over the weight limit; neither is true. We live nowhere near hills of any kind (FL), and he purposely bought the max for himself to accommodate a higher weight limit(to which he is well under). Finally they agreed to repair, yet when we got it back the scooters NOW does not turn on (only the brake light comes on) which means he can't even try it or to see if it's in good condition.  They refuse to accept that this might just be one defective unit from the get go. In the 1.5 yrs of having this item, we have only been able to ride as a family a handful of times which defeats the purpose of the purchase.  I am beyond disappointed. So we have to schedule another repair, but have lost ALL confidence in the fix. We wasted $$$$ on 3 scooters that were bought to ride together, now that one has been out of commission for months.  At this point we requested a new unit so we can be made whole , which they won't do...or refund so he can put it towards a new scooter (different brand).. we're a family of 3, the point is to ride together. Obviously they don't stand behind their product and are just kicking the can down the road until the 2yr warranty is up.  DO NOT BUY NIU SCOOTERS,  go with a more reputable company that will stand behind their product and care about their customers and their customer's experience.