And those turbo motors are necessary to move these exceptionally heavy cars. The current 7-Series in rear wheel drive Alpina trim (let alone the all wheel drive version) is up to 4712 pounds. This is SUV territory.
BMW seems to be aware of its weight problem as it is aiming for weight close to 4 cylinder F10 5-Series territory. That means 3681 pounds or 507 pounds lighter than the current base F10 740i. That would be absolutely monumental but we are talking a very ambitious goal. A 500 pound diet? That means the next generation 5-Series will need to go on one as well along with the rest of the lineup that follows. Definitely a good thing.
The competition has been beating BMW in this area. The new Mercedes SL is much lighter than the previous model. Porsche managed to lighten the 911, Cayenne, Boxster, and Cayman. Even Audi is getting in on the extreme weight loss aiming for 800 pounds with the next generation Q7.
Will BMW meet this ambitious goal? Who knows, but at least they are aware they let the cars waistlines go. Making more money can do that.