Medically reviewed by Anju Goel, MD A mean platelet volume (MPV) test measures the average size of platelets in your blood. Platelets are blood cells that your bone marrow makes. Healthy platelets ...

This represents a strategic change from the Quad-Motor, which used motors supplied by Robert Bosch Corp. As Dual-Motor volume ramps up, it is unclear how long Bosch will keep the Quad-Motor business.