Is this a good deal on a lease for a 2013 Infiniti G37?

Be careful... if they are telling you they are making your last few payments, they are leading you by telling you what you want to hear... a lease is no different than a loan and they can buy it out and take the car into their inventory like any other car you would be trading in... so that would be a flag with me to start... as for the deal itself, there is a lot more to a lease than just the payment... you negotiated the cap cost and cap reduction (or at least they are letting you think that you did, but the reality is that you probably got yourself a worse deal... navigation affects residual balance,so while taking it out of the car makes it a cheaper price to by toda, it also makes it a lower residual down the road, so the reality is that you probably just made a better deal for them... also, you need to ask them about aquisition & disposal fees, any other fees - like some finance companies pay your excise tax and then charge you for doing it... As for deciding by Monday, why? IS that because you personally need to or is that the dealer telling you the deal is only good till then? If so, I'd say again, that should be a red flag about the dealer and their sales techniques... just like their telling you that your down payment inclused tax - you normally pay a use tax on a lease as you make your payments, so it isn't likely that there is much tax in that 4500... for that matter, depending on your state and sales tax rate, if he was being honest about the down stroke covering the tax, at that point, your deal with the 2k down isn't even covering the tax... again, I'm just going by your quick blip, but it sounds like there is a lot being told to you that doesn't line up and is more a typical 'used car salesman' approach... Without knowing the residual and if 10k miles a year works for you (I mean that isn't even 1k a month, so most likely you're going to have a big mileage penalty at the end) I can't say 100% that this isn't a good deal for you, but based on my experience (and I was the 2nd VP of the National Vehicle Leasing Association), it doesn't sound to me like it is a great deal at all

Here is a calculator you can try out: https://www.bankrate.com/calculators/auto/auto-lease-calculator.aspx