NHTSA Complaint #11430713 — 2018 JEEP GRAND CHEROKEE

We have experienced 2 separate episodes of this vehicle suddenly becoming disabled with complete engine shutdown while driving at highway speeds. Both episodes occurred abruptly, engine idling extremely rough, then shutting down within seconds, leaving the car completely inoperable. Both episodes were very dangerous as the car could barely coast to the shoulder of the highway for safety of the passengers. The first episode occurred when the car was a few months old, gas gauge showing over 1/4 tank of diesel gas. Car was towed to the Jeep dealership where they claimed that the car simply ran out of diesel (despite the gas gauge indication) no repair "was required", car filled with several gallons of diesel and OBD codes reset by the dealer, car then ran normally . The second episode occurred one week ago. Again driving at highway speed, 5 lane highway, over 1/4 of diesel remaining on the gauge, sudden violent engine running, sudden full loss of function of the vehicle, nearly in an accident simply trying to " limp " to an emergency stop on the road shoulder. Car required towing to our residence. with the prior experience at the Jeep dealer, despite gauge reading of greater 1/4 tank, the car was filled with 5 gallons of diesel, car started normally. All OBD fault codes insufficient fuel to the engine, fuel rail, fuel pressure, etc. The car has run normally since. I contacted my Jeep dealership and they stated they have no knowledge of any similar issues with this Jeep Diesel engine. The internet and Jeep car forums are filled with identical Diesel engine problems. Either related to faulty fuel pressure regulation or some design fault with fuel level indication affecting the safe operation of this Jeep Diesel engine. these problems date back to pre 2008. We now feel very unsafe to drive this relatively new 2018 Jeep Diesel Grand Cherokee at highway speeds without hovering near the shoulder lane of the road.