About cheap I agree. Reliable? A motor with such a small displacement has a very low rpm range. Simply put, in traffic jams, you have to constantly “twist” it, because it is practically devoid of low revs. And because of this, the engine resource is significantly reduced and the wear of parts increases. Efficiency? Well, depending on what. To get your body from point A to point B, maybe yes. But no more than 30 kilometers. The biggest plus of such bikes is maintainability. It's undeniable here. I personally saw how a similar bike was repaired in the alley, sprinkling all the details with sand (accidentally of course). And the owner said that there are almost no problems with this bike. Naturally, everyone chooses a bike to their liking. I just expressed my opinion, not wanting to offend anyone.
