The assembly was a bit challenging because the company does not provide detailed instructions, but this is not the fault of the store. Other than that, Playmobil toys are excellent.

It fits in the fire station and the bus we have from Playmobil. My husband had a little difficulty assembling it, but it's worth it.

Instructions for each supported model can be found here: https://rc-modul.playmobil.com/

The instructions included in the packaging refer to the setup after placing it on each model. Towards the end, it states that the controller needs to be synchronized with the receiver before it can function. This should obviously be mentioned first, as nothing works without it.

Regarding the build quality, I must say that when the child plays on a carpet, the gear for the wheels starts to wear out relatively quickly (because the wheels are made of regular rubber, so they can't easily spin, resulting in the gear taking all the strain). I believe that due to this, it will not have a long lifespan.