I found it very helpful to read what deals others were getting, so here's the deal I got when I bought my 2014 i3 BEV from a Houston, TX dealer on February 21, 2015:
Owner's Choice
24 months / 10,000 miles per year
2.99% APR
MSRP: $51,650
Dealer discount: $7,370 (14.27% off)
USAA discount...