It's worth saying that due to taxing in USA they are a worse deal than in Europe.
And anyway, complaining that some luxury cars are a bit more expensive somewhere is a first world problem most people aren't lucky enough to have.
Regarding the cost of the goods, cars in particular are still cheaper in USA (even European ones). Most American states will have cheaper taxes than most European countries.
Regarding the rest of the goods, I don't know America nearly enough to have a strong opinion, but checking median salaries by state and median salaries by country in the European union I'm quite skeptical to believe most goods are actually cheaper.
Regarding the purchasing power I don't know either.
As I said in another comment imported American cars aren't a good deal in Europe. Japanese are a good deal too, but there aren't really many options that are sporty AND practical.
Do they? You're commenting on a thread about their logo change which suggests they don't.
BMW has for very long time been primarily a brand. Take away the brand and they simply wouldn't compete in the market. They build real machines, but not very good ones. Look at Honda if you want an example of a company that is about the machines.