Negotiating a lease on loaner vehicle

Folks, this would be my first time leasing a vehicle. I am looking to lease a luxury SUV. We have never had any luxury cars in the family so looking for suggestions. My budget is limited and I have found a loaner vehicle being offered by a dealership at discounted price online (approx. 8-10% discount). Is this what I should expect or should I ask for more discount. The vehicle has close to 10k miles.

In addition, we have a toddler and probably will be using a car seat for travels. I have noticed that the car seat makes impressions on the leather so do I need to take any caution? how do others do it? please share some thoughts on avoiding being charged any fee during lease returns.

Thanks for your feedback/help!

Which SUV? If it’s a BMW, don’t bother if it has 10k miles.

Its not BMW, its MB…

As far as I know, MB doesn’t change the RV based on miles like BMW, so that’s good. Why don’t you give more details so people can help? Is it a GLC, GLE or GLS? If it’s a GLC, you probably won’t be able to get a great discount, even with it being a demo.

Its GLS 450 with most of the options…

If you can put your question in the following format, it helps a lot

Year: [2017]
Make, Model, and Trim: [Mercedes-Benz GLS450]
Months/Annual Mileage:
Zip Code:
MSRP: [58125]
Sale Price:
Mileage:
Fees:
Drive Off:
Term:
Payment:

To clarify: the RV% may not change but the RV $ value will decrease based on the number miles.

I used a brica car seat protector, worked pretty well. Still had to take a hair dryer to smooth out the leather a bit but much better than without.