We purchased a new Ford Ka 1.2 Studio from our Ford dealer in February 2010 in a good deal which included scrappage. On collecting the car after its second service - its first by a non-Ford dealer - we were asked: "Do you know there's a Fiat Punto engine in that car?" as if it was unusual. No we didn't know. Could it be true? And, if so, could we have done anything about it? What are the implications, if any, particularly when we come to sell? We're perfectly happy with the car but this has got us worried that we didn't get the deal we thought.