Two problems related to engine funny noise have been reported for the 2018 Jeep Compass. The most recently reported issues are listed below.
When my vehicle hits 47 mph it starts making a very loud humming noise coming from the engine area. The noise continues to be persistent until I slow down to less than 30 mph. I have taken it to dealership but Jeep doesn't know how to fix it. They say they have been working on a software update since early 2018. I'm not sure if it's damaging my vehicle but it is extremely loud.
Vehicle leased new began to have grumbling, load humming noise coming from transmission at 37mph. Took test drive in another vehicle same noise. Jeep said known issue waiting for update. Took vehicle back to dealer updated transmission and drive line module. Noise still there, if vechile placed in 4x4 or esc turned off noise will disappear. Noise sounds like it can be driveline or transmission not in right gear. Car is not shifting correctly and rpm goes high. Vehicle has stalled out a few times for no reason car was stationary with foot on brake and the auto start off disabled. Heated steering wheel and seats get extremely hot. Shut down on there own at times for no reason. Poor gas mileage is related to engine, transmission and driveline problems.