Recently purchased a 2023 Apollo City (dual motor, what used to be a City Pro). The stem makes popping noises over larger bumps and under heavy braking. The rear upper shock mount has excess play that causes clunking noise over bumps. When the ambient temperature is below 50F, I frequently get a E3 error code when attempting to power on for the first time of the day. According to Apollo customer service and online feedback from other users, all of this is '???normal'??. I still like the scooter and ride it more than either of my Segway g30 models because it'???s more fun to ride and much more stable at speed. It'???s effortless to ride at 20mph. But the quality is nowhere near what I'???m used to with my Segway scooters, which make no odd noises and work reliably whenever used. If Segway builds a dual suspension scooter that weighs and performs similar to the Apollo City, I would buy that instead. The heavy weight of the Segway GT1 and GT2 models is what turned me off. And the G30 max 2 is likely more refined, but slow compared to the Apollo City. I thought Apollo was a premium manufacturer at least equal to Segway, now I know that'???s not true.