It is very common for the clutch slave cylinder on these to fail, so get it back to your Ford dealer, complain of the heavy clutch and suggest he fits a new slave cylinder. If he refuses, write a letter to the dealer principal stating that there is a problem with the clutch slave cylinder, brought to his attention on 15th October 2015, so if the clutch later fails you hold him responsible. Send this by Post Office Special Delivery so it becomes a matter of record you can later rely on in court if necessary. The best Fiesta sized automatics are the Mazda 2 and the (slower) Honda Jazz.