Are 2005 S80 2.5t basically the same as S60?

[arrrxivvv]

I'm shopping for cars with a friend, came across a 2005 S80 2.5t, 145,000 miles.

Since there seems to be a lot more information for s60/v70 than S80, I wonder if this model is basically mechanically the same as the P2 s60, v70s, with 2.5t inline-5 and Aisin 5 speed?
Or are there issues specific to those models.

I personally drive a 2004 xc70, wonder if my experiences can apply to this 2005 S80 2.5t.

This question is posted on the P2 s60/v70 forum as well.