MB c300 over 10k but they're still leasing it to me

2017 C300 MSRP 41k
Basically base model
36 month 15k miles/yr
Bottom line price $325/mo(7.75 tax rate) 0 down
$4000 MSD

So Cal dealership.
The car is over 10,000 miles by a little bit, but they said they’re gonna register it at 9998 so that they can lease it.
I have $2500 flee5 incentive and its about 25% off MSRP with buy rate MF and base acq fee.

Just wondering about the mileage situation will that affect me? How are they gonna make this deal happen?

Im assuming Im gonna lose some miles from my yearly allotment if they do this. I would be willing to do that if they throw in maintenance I suppose.

Out of warranty before lease is up. Unless CPO covers.

Ahhh I forgot about that. I may have to do a 2 year and ask for a lil more discount to make this a leasehackr worthy C300 loaner deal.