Quote:
Originally Posted by Dandanbmw
I personally think the 640d doesn't sound tractor like at all. The best sounding diesel they have brought out imo.
You can buy a add on contraption that beefs up the sound like the Audi uses but it's expensive. The active sound doesn't sound bad at all either and has fooled many that have been in my car.
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Official contraption or aftermarket? Not seriously considering it but be good to see it in action.