Sorry if this is something of a rant. Leasing my new Cayenne e-hybrid should be the obvious play, because you taxpayers would kick in $7500 for me. Turns out Porsche Financial Services USA takes so much out of you that it negates that advantage, particularly if you opt for a single payment lease.
Leasing calculations, despite all the obfuscation foisted on us by car dealers and finance companies and their partners at the state and federal regulatory agencies, should be pretty simple. The finance company is depreciating the car on a straight line from the purchase price to the residual value, so you just take the average of those two values and multiply that by the interest rate to get the amount of interest. Add the interest to the depreciation (purchase price minus residual) and that's how much your total payments should be.
In a single pay lease, you can just multiply the monthly lease payment amount by the term, which is what Porsche does. But, if you're at all educated about money, you ask, "Wait a minute, if I give you all that money up front, why should I pay interest on it?" Great question. Porsche's answer is, "Okay, we'll drop a few basis points off the interest rate." If you're a little more educated about money, you answer, "Well of course you should drop a bunch of basis points off the interest rate because you no longer have any credit risk. The interest rate you charge should be the same as a US treasury. And you're still charging me interest on money you received up front." To which they answer, "Yeah, too bad, that's how we do it."
Now, to make matters worse, suppose you have a trade-in or you want to throw in some money up front to reduce the interest amount. The trade-in and/or the up-front money are "capitalized cost reduction", meaning that the interest rate is multiplied by the average of (purchase price - cap cost reduction) and the residual. If your total cap cost reduction amount is the total amount of depreciation, then the interest should be based only on the residual. That's the same as a one-pay lease, in theory, and many (most?) finance companies do it that way. Porsche, on the other hand, says "Nein, we don't allow any cap cost reduction on a one-pay lease!" Which _also_ means that you don't get any sales tax benefit (5.9% here) on your trade-in.
Add in the lease fees and the required PSMP, and the $7500 EV credit goes "poof".
And the finance manager's only response is, "Porsche offers a really great money factor on the one-pay lease."
