Other Fuel System Pump problems of the 2006 Ford Expedition

Was driving down off ramp lost all power to the vehicle, no steering, no brakes. I had my 3 children in the vehicle with me and thankfully I was able to cost to the shoulder until help arrived. Extremely scary had it happen 2 minutes earlier would of been off the ramp and into oncoming traffic! this is unacceptable!! my mechanic says it's the fuel pump, and just the part is 500 dollars?!? this could of ended very badly and I have had nothing but issues with this piece of junk. The paint is peeling off, looks like no primer or sealer was used it literally is flaking off on the hood and rear gate right where you would put your hands to open it. In the manual in very small print it says the oil from your fingers may cause paint to corrode, are you kidding me??? your not supposed to open your hood or tailgate??? ridiculous!! this vehicle in my opinion is a lemon!!.