yes I know that is difficult to accept that audi is building cars which with over than 50 HP less are faster than bmw.
Yes, is difficult to accept that for the 381hp M550xd bmw is claiming 4.7 sec for 0-100 and is doing in the best tests 5.0 sec which means as fastest as the audi with 313hp.
yes is embaracing.
less than 6.3 sec needs a normal 3.0tdi with 250HP.
before acting like a fanboy which knows nothing, but to yell stupid things, please show us pertinent test where this 313hp tdi can't do less than 6.3 sec.