davidv11:"4.0-litre V6 hasn't changed at all, and still has 207bhp and 240lb ft."
I believe that the 4 litre V6 is Ford's 'Cologne V6' - you know, analagous to what was once the Essex V6 out of Dagenham. It's still made at Ford's Koeln(Cologne) engine plant too, and shipped to the States for the Mustang and a couple of SUVs(light trucks). Basically, I'm sure its dead cheap, unit cost, compared to fancy, current Zetecs and son on, especially with the design&development costs amortized aeons ago. Heck if it sells, why not. We don't live in a communist world yet, being told which motors are 'verboten' and all this old workhorse needed was for fuel prices to fall again. To wit:
As to the more general point about 'lazy', untuned sixes and eights in American cars we have to remind ourselves that their 'gas' is half to one-third the price in UK/Europe. The gas price has fallen massively, back to around $2.50/USgal from near $4 six months ago. Apparently Ford can't make enough of some versions of the F-series truck due to having massively cut capacity back in the summer when oil was at $140 and 'experts' were predicting, read ramping the price, the $200 barrel by end of 2008. Funny world.
http://en.wikipedia.org/wiki/Ford_Cologne_V6_engine