 On acceleration & deceleration, one can hear & feel a slap in the drivetrain that is unmistakably wrong.  Two trips to Ford service & multiple drive train parts R&R'd did not solve.  Ford's eventual answer was... "All the Energi's make that noise".Ford's 'MyTouch' , Nav & entertain system, is truly a lesson in anger management with it's delayed / non-responses.Overall, the car's quality & operation is low compared to its sticker price.But woe to you should you need assist from Ford HQ resolving any issues.Their customer service rates a zero and would test any Preacher's patience.