Anyone know how Diplomatic Sales Programs work

Hello all I was wondering if I could get some help. We just recently moved a few months ago to the US (FL) because he’s a diplomat, so lots of moving, anyways I have been looking at leasing a car for university because buying one would be too much of a hassle especially with having to move and all. Now I know the German manufacturers have a diplomatic sales program which is something like ~10% off MSRP (not exactly sure) + no tax. But I was wondering if one is able to further negotiate stuff like the down payment and MF and all, I’m relatively new to all of this so I was wondering if I could get some insight. Thank you

In these volatile times, do you really want to get into 2 or 3 year contract? Unless they have an exemption clause like the do for active duty military, why not get s beater?