Originally Posted by WhyGeeGee
The SL is still lighter which could put them at equal grounds. They funny thing is that the new 6er is heavier then the old 6er but the new SL is lighter. Do you think maybe BMW and MB switched engineers?
No, MB made alot of the new chassis out of aluminum where as BMW will be going to carbon fiber starting with the next round. I think the next 7 series will use quite a bit of carbon and possibly the next X5 as well. With that we should see a significant reduction in vehicle weight.