Read the fumes, pros and cons in the following topic:http://www.m5board.com/vbulletin/e60-m5-e61-m5-touring-discussion/531897-bmw-engines-gigantic-pieces-s.html
I agree, and there is nothing wrong with Muscle cars or American for matter. But what most people seem to forget is the history and the reason behind the engineering decisions.
UP UNTIL RECENTLY..
In America they wanted to make more power they throw displacement at the problem. Minus the Ford getting yamaha for the SHO and GM getting Mercury or maybe Yamaha involved for the ZR1's LT4 power was made by going with bigger engines, everything still based on old push rod design. AGAIN NOTHING WRONG WITH ANY OF THAT.
In Europe, however, they couldn't go bigger regulation and taxes were based on engine size. So they had two options, turbo (Audi) or high revving constantly redefined design (BMW) or both (Porsche, Ferrari). Hence new designs that were race proven but never really stood the test of time.
Now do I agree with some posters that BMW quality has gone down? Yes I personally think the sheet metal of the E60 is made of tinfoil and dings if you look at it. Are the cost of parts a little nuts, yes the actuators and vanos solenoids for example. But I wonder if it's cost to build since the volumes are less now and VDO has to retool a line just to build a few thousand, someone is covering that cost and sadly it's the consumer.
So I think some perspective needs to be had. If you want a fast cheap car European has never been the way to go.