Thank you for choosing MIHOGO. We want to assure you that you don't need to worry about any post-purchase issues. Our bikes come equipped with smart meters capable of detecting any system failures. In case there is a problem, there is no need to visit a repair store. Simply inform us of the error code, and we will promptly send you new parts. Thanks to the modular design, the entire bike is easy to install and operate, ensuring you a hassle-free experience.