I just leased a 2018 i3 BEV, loaded with every option except 20" wheels. Was sitting on the lot at BMW of Dallas for a couple months, and it was end of the month so was able to negotiate a little harder. 6 other dealers in Houston/Austin/Dallas wouldn't even talk with me about a discount over 5%, and offered at least $2k less on my trade-in (Dallas BMW gave me $17.5k, which paid off my loan on that and reduced taxes on the i3. TX charges 6.25% taxes on full sales price).
#s:
36 month, 10k per year lease, $0 down (only 1st month lease payment due at signing)
MSRP $54,145 (incl destination)
Dealer discount $4,230 (7.8%)
Incentives (reduced cap cost): $7500 fed tax credit, $2000 BMW loyalty, $1000 OL code for entering BMW trip contest
MF: 0.00186 (got screwed a little on this should have been 0.00166, but they wouldn't budge. Net effect is ~$10/mnth)
RV: 58% ($31,404)
Docs $350
Monthly to BMW Finance: $440
cash back after sale: $2500 from TX Environmental incentive, $1000 from BMWCCA (cost $135 for 3 yr membership to qualify)
effective lease cost: $346/mnth, zero down