My wife drives the same route about 350 miles to work, The last trip her 2011 prius lost power and the fuel mileage dropped 15 mpg, there are no warning lite. Any ideas?
350 miles to work??? That's one heck of a commute! Please answer Fuel economy complaints/queries? Please copy, paste & answer these questions, esp. if you're new | PriusChat here.
Have you had maintenance done on your car prior this? Sometime computer goes or get stuck to low temperature and provide wrong info to the hybrid mode. Check aux battery if run down or some wires disconnect. Get back to me And tel me if youhave your car fixed or it reboot itself correctly