When you hire a car in Eisenach, you should abide by the city’s 50 km/h speed limit. The speed limits on any suburban roads and highways in Eisenach are 100 km/h and Advisory, respectively. Be on the lookout for posted signage, because these speed limits might change depending on where you are within Eisenach.
The weather in Eisenach during September would likely not impact the type of hire car much. momondo users do seem to prefer certain car types when looking for a Eisenach car hire.