The FOSSGIS car profile is using a vehicle height of 2.5 metres:
https://github.com/fossgis-routing-server/cbf-routing-profiles/blob/master/car.lua#L42
It won't route through the tunnel as it has a max height of 2 metres:
https://www.openstreetmap.org/way/14306584#map=16/48.8652/2.1591
Michael
See
https://www.openstreetmap.org/directions?engine=fossgis_osrm_car=48.9046%2C2.1962%3B48.7810%2C2.1723#map=12/48.8430/2.1665
This routing is not taking the duplex A86 tunnel in Paris. When you
switch to Graphhopper routing then it is taking the tunnel.
I don't see any obvious errors in the
