G5, not G8. The one based on the Cobalt. The USDM GT had a 2.2L with 155hp, the CDM GT had a 2.4L with 172hp.
Talking about the G5, you're missing the point a bit. In Canada, the Pontiac brand was so well-regarded that they often received a "full" lineup and a list of options that we wouldn't have had in the US. Keep in mind they had a sedan and coupe version of the G5, which they called the Pursuit. So, choosing between the 2.2L and 2.4L engine was more or less a cost decision on behalf of GM. They were able to charge more for a
slightly altered Cobalt coupe, with the smaller and more-affordable engine. They made money.
White & Nerdy
See the Focus ST example above, and how for a good chunk of the Focus' lifespan so far, we were a generation or two behind Europe instead of the other way around.
If you took the time to read on what you're talking about, Ford had the same reasoning as GM did with the American G5. It was all about money. For them to continue to build the MKI Focus down in Mexico, and only give it slight alterations in style and under the hood, and make a metric ton of money.
For Ford, it was a numbers game. The MKII Focus was significantly more expensive for them to produce and sell to the consumer. To Federalize it, and deal with those drastic changes to the car, the Focus would have went from a $14,500 econobox, to a $20,000 compact that would have cost nearly the same as the Fusion. So, we had the Focus MKI, MKI.2 and MKI.3 soldier on until 2010. When the economy turned down, the MKI.3 model sold like hotcakes, and Ford made a killing. But, the changes by Mullally to streamline global lineups and the demands of consumers for premium compacts made for perfect timing on the MKIII model.
White & Nerdy
The thing is, you see, the UK is not Ford's home market. Neither Germany nor Australia is GM's home market. Just by virtue of being the company's home country, we deserve their best efforts. Not the bottom of the international barrel combined with specially-built adrenalin antidote (*cough*IMPALA*cough*).
What you're essentially suggesting is a return to what ruined the American automotive companies in the first place. Designing and producing vehicles primarily for a single market (North America, in the case of what you're advocating) dramatically increases costs, decreases efficiency of the company on the whole, and in the end only sets things up for a dramatic disaster.
Cars like the Impala are
specifically designed for the American market. It is big, comfortable, and powerful. Its affordable, does alright on gas, and is surprisingly dependable. There is nothing wrong with it outside of the fact it is large, boring, and designed to serve merely as transportation. It is a car designed for the American highway, and rightfully so, it sells quite well. There is nothing wrong with that.
But when you suggest that
we get the best vehicles first, you underestimate the work that is done by the international arms of Ford, GM and Chrysler. Their work on engines, transmissions and driveterrain systems far outweigh that of which had been done in America in the past two decades, that's a simple fact. But, those features are being rolled into our vehicles a little at a time.
I love American cars and trucks just as much as the next guy, but if we're going to be competitive in a global market, we're going to need to use the best talent from Britain, Germany, Italy, Australia and America.