BMW  is recalling certain model year 2012-2014 320i, 328i, 320ixDrive, and 328ixDrive sedans; model year 2014 328ixDrive Sports Wagons;

model year 2012-2013 528i and 528ixDrive sedans, model year 2013-2014 X1sDrive28i and X1xDrive28i vehicles and model year 2012-2014 Z4sDrive28i roadsters, according to the National Highway Traffic Safety Administration.

Due to insufficient lubrication, the vacuum pump that supplies brake power assistance may fail.

A failure of the brake vacuum pump results in a reduction in braking power that could increase the risk of a crash.

BMW will notify owners, and dealers will modify the vehicles to prevent insufficient vacuum pump lubrication, free of charge. The safety recall is expected to begin in November 2013. Owners may contact BMW customer relations at 1-800-525-7417 or email BMW at CustomerRelations@bmwusa.com.

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.