I am considering getting a 2011 or 2012 M56. I'm looking for blind spot warning system. Not necessarily a sport version as I have heard the rougher noisier ride with the larger wheels. I own an M37 loaded with 26k miles on it and like it but wanting the added performance of the v8.

M37 had a strange issue with brake light, battery light (warning lights) coming on at same time. Took 3 tries to cure it after battery and programming followed by new alternator did not solve it. Replaced engine harness fixed it. I have no idea what and where the engine harness is . My dealer and Infiniti took great care of me so looking for my 13th Infiniti. Any one else had this issue?

My m37 is a 2012, a friend has a 2011 and had a few issues I have not experienced. Any changes in the 2012 worth letting that drive my choice?

to my knowledge there shouldn't be to much of a change besides cosmetics I would think, somebody else will chime in bruh, if you want more power, you could swap out your air filter, do headers, exhaust, reprogram and so forth