Just as an FYI our '14 Escape W/EcoBoost (37,000 miles), was acting like it didn't want to start after a gas fill up. Took about 5 tries then it finally would start. After that it would start fine until the next fill up. CEL came on after the first time. Finally got it in to the dealer after three tanks of this. Codes were P0456, and P1450. Vapor canister purge valve was bad. It was covered under the emissions warranty. Just thought I'd mention it here for future reference, and diagnostic help. Been a great car other than this. Take care.