If it shoved the subframe forward it could have shoved the differential/driveshaft into the rear of the trans a bit, possibly damaging something or damaging some seals. Was it leaking any fluid after the impact?

If it was hit hard enough to crumple panels it is probably not worth repairing the car. The safety factor has been compromised.

__________________
-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)