[bjrosen]

GM still has credits available, they won't run out until next year. The tax credit is based on battery size, I don't know if the formula will change next year but this year the 18.4 KWh battery in the Volt qualifies for the full $7500 Federal credit, the model year of the car doesn't matter it's the battery size. The puny battery in the Prius Prime only qualifies for $4500.

 

[bjrosen]

The federal tax credit is based on the number of vehicles sold by a manufacturer. The model year isn't relevant. After the limit is reached the full credit is still available for a quarter, after which there is a declining amount of credit available. AFAIK GM has not hit the 200K limit.

GM and Tesla will both reach 200K early next year, probably in Q1 certainly by Q2.