You make a good point, but I don't think a lot of people know that the government only gives out like 250,000 clean car rebates to each company in America ...... So as far as I heard as soon as they sell over that number all the other people are SOL, MEANING technically every car that they sell NEW before you get your III means it knocks off one more person from the bottom of the list that WOULDA received that tax rebate
Has anyone else heard this? I could be wrong
Your understanding of the EV tax credit (not "rebate") is garbled. The tax credit begins to
phase out when a manufacturer reaches 200,000 US sales. In the quarter that US sales reach 200,000, all cars sold in that quarter plus the following one are eligible for the full $7500 tax credit. Then sales during the next two quarters get half of the tax credit. Then sales for two quarters get one fourth of the tax credit. So:
Q0 (200,000 US sales reached): $7500 tax credit for all US sales in the quarter
Q1: $7500 tax credit for all sales
Q2: $3750 tax credit for all sales
Q3: $3750 tax credit for all sales
Q4: $1875 tax credit for all sales
Q5: $1875 tax credit for all sales
Q6: No tax credit
Many here believe that the 200,000 threshold for US sales won't be reached until the first half of 2018. If so, many of the early Model 3 buyers may qualify for the full tax credit if Tesla produces it on schedule (not that they have met their timelines with any previous car models).
Even if your purchase qualifies for the full $7500 tax credit you will only get the amount you owe in taxes for the year of your purchase. Unless you owe $7500 or more in federal income taxes for that year you won't get the full credit.
Given the situation you described, it is hard for me to see how switching from the Audi to a used Model S would be cost-effective. There may be other reasons to make the switch but saving money isn't one of them.