The N55 engine has been around since 2009. The earlier engines had weak vanos bolts which could shear off and potentially grenade the motor. There is a recall in place to replace those bolts, but I'm not sure of the production cut off date.

My 09/11 has no open campaigns and no history of the vanos bolt recall.

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09/1996 M3 Alpine/Modena manual sedan (1 of 26)
05/1998 M3 Estoril/Grey automatic sedan (1 of 185)
09/2011 X5 35i Alpine/Schwarz Premium