2017 E300 Loaner Lease

Hello hello first post. I dont think this deal is up to par. Any advice would be appreciated.

2017 Eclass w/ ~3k miles
[MSRP]: 60950
[Sale price]: (51500)
[MF]: .00120
[RV]: 59%
[Down]: 765
[Monthly]: 652.91 incl WA tax
[Acq fee]: 1095 (they won’t budge)

I’m getting very different numbers on the leasehackr calculator. Wondering what the difference is.

EDIT:

w/ 10 MSD @ 6k the monthly is 581. (mf .0005)