About 8.5-9 seconds for my 300E, it hauls pretty good when I let it out.
Probably a solid 8 (maybe a hair under) from the 420....it really moves...engine only has 56k on it since full rebuild. (45k on the trans since rebuild)
about 12.5 for the SD...it has an '85 trans with 3.07 diff....straight pipe, maxed alda...bosio nozzles....it flies for a 617....
around 19ish for the 190d.....on flat ground....
My dad's 420 will still do a solid 8.5 even with 300k on the clock, one head rebuild 80k ago......full straight pipe with just the rearmost muffler....sounds awesome.
__________________
-diesel is not just a fuel, its a way of life-

'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)