My manual says 1200 miles is the break in period. My sales rep said 500 miles, don't go over 100, don't floor it off the line and don't use the cruise control. Vary the speeds as much as possible.
I drove streets, freeways, slow, fast (80-90), accelerated from 30 to 80 quickly a couple of times, drove during the day, at night, etc. I did bang out a couple of quick turns but 95% just took it easy as far as acceleration is concerned.
I want my car to last a long time and be reliable as possible. I heard (on this board somewhere) that some dealers deny claims based on improper break in.
It's just a short period of time to control your impulses. For the money we paid, and for reduced future costs of repairs, it seems a small price to pay.
2004 E60 530is, Delivered 12/12/03, TiSilver/LGrey, PP, SP,PS, PDC, ACC, FRS, Step, Xenons, clear bra, body colored rear inserts. (Retired, 1983 henna red 320is)
2004 Corvette Z06 Commemorative Edition