Greg, great review! Very comprehensive and neutral - a rarity these days.
As for the Active3 vs 335i vs 335d...me thinks BMW is playing economic games (good for them!).
You see, tech costs. The more tech ya have, the more the car costs. Is it linear (i.e. the amount it costs BMW = the amount the consumer is charged)? HA, no...BMW makes much more markup on these 'alt fuel option' puppies.
Basic hybrids are expensive...few people want to pay $30-40k for a cheap car that uses a bit less fuel. On the other hand, luxury hybrids are a brilliant idea from a corporate earning standpoint - people pay a lot for the car anyway, so a $2-4k price jump is more palatable. Making performance equal or better to its non-hybrid counterpart just sweetens the deal.
My parents bought an RX400h at 1 yr old and 9,000mi on it from the US...They saved over $30k from the sales price of a new one in Canada...lest I digress - point is, their RX400h gets 4MPG better than their neighbour's RX350, is faster, more torque-y, etc. They are happy with their purchase, especially since they paid less (depreciation's a b!tch).
The Active3 gets 7.1L/100km city for the auto vs 7.6L/100km city for the 335i auto (both are RWD). That, coupled with a 0-60 jaunt that is slower in the Active3, and I'm confused what the point is. There's no performance benefit, and the fuel savings is negligible (and probably won't show in real world driving, especially with a/c or heaters used).
What I love about this hybrid - they kept a decent trunk space, the back bench folds 40/20/40 despite a battery pack in the trunk, and it's apparently very smooth.
Still, I would like to see sales #s in Canada for the 335i vs 335i with xdrive - I'd wager that the xdrive version sells better. Neither the 335d nor the Active3 have xdrive as an option, which is a huge deterrent for many 'round these parts.