2005 Mercury Montego & 2006 Ford Five Hundred Transmissions?

I'm looking at a 2006 Ford Five Hundred with 76k miles on it.
My dad had a 2005 Mercury Montego and the transmission went bad at 80k miles.
I want to know if they used the same transmission in the '06 Ford Five Hundred that they put it in the '05 Mercury Montego.

Walk away from the 500 if it has a CVT transmission. They used two transmissions the CVT and a six speed the six is the better one. The two cars did use both transmissions. Dad probably had the CVT

Bo is right. If I'm not mistaken the AWD cars had the CVT and the FWD cars had the 6 speed auto.