Thanks for correcting me on the actual destination - Golf Park not Golf Club! What those two routers are showing is the closest spot to the destination pin, despite not being able to actually get there! If you move the destination pin to the car park, you then get: https://www.openstreetmap.org/directions?engine=graphhopper_car&route=-42.83620%2C147.50870%3B-42.83547%2C147.47797#map=17/-42.83461/147.48051 which is correct.