Lease NOW.... Because a handful of dealers are getting $2,500 off per Volt and passing that on to the customer.......wait a week or two, you may end up paying $2,000+ more than you would today.
Because the same $2,500 applies to purchases, with specific dealers, your argument is a moot point. With inventories of the 2013's rising so much in August, I wouldn't be surprised if deals continue. As mentioned, '12's may get scarse.
Leasing, even if all-in sub $300 per mo., starts to make less sence for the same reasons it always does.
-you get to pay sales tax all over again after 2-3 years
-If you tend to own for 5-6 years, you should add initial depreciation of the second car as a cost of leasing. Because it will be a lot more for your next car, after the lease expires, than it will be for owning a 3 year old Volt a couple more years.
-Above said, there is no better insurance against surprisingly low future market values, than leasing.
-I think being unable to capture the $7,500 tax credit almost unquestionably favors leasing.
Everybody's math is different.