The problem is routing from Nemmenich to Zülpich. It says that you have to turn left at the end of the road, but this is wrong. You have to stay on the road.

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1. Continue	180m
2. Turn sharp left onto L 162	10m
3. Turn right	160m
4. Arrive at destination	
Directions courtesy of GraphHopper

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1. Start on unnamed road	180m
2. At the end of the road turn left onto L 162	10m
3. Turn right onto unnamed road	160m
4. Reach destination	
Directions courtesy of OSRM (FOSSGIS)

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1. Drive northwest.	180m
2. Turn left onto L 162.	10m
3. Turn right.	160m
4. You have arrived at your destination.	
Directions courtesy of Valhalla (FOSSGIS)