After a trial period, it was a no-brainer for us to work with WUNDERFiX. We quickly saw a clear increase in customer satisfaction. What really convinced me was their guarantee promise: to resolve every service case anywhere in Germany and Austria. And they deliver! From remote North Sea islands to valleys in the Austrian Alps – WUNDERFiX simply gets it done. We are particularly impressed by how reliably WUNDERFiX masters even the complex variety of brands and components in our refurbished bikes.