1. Measure the gap and height between the front or rear door and the body.
2. If not as specified, loosen the front or rear door hinge installation bolts or the door lock striker installation screws, and reposition the door.
Clearance
a: 2.5-4.5 mm {0.10-0.18 in} b: -0.8-1.2 mm {-0.03-0.05 in} c: -0.3-1.7 mm {-0.01-0.07 in} d: -1.0-1.0 mm {-0.04-0.04 in} e: -0.5-1.5 mm {-0.02-0.06 in}

3. Tighten the bolts or screws.
Rear door removal/installation
Front door glass removal/installationMazda 6 Service Manual: Reporting Safety Defects (U.S.A.)
If you believe that your vehicle has a defect which could cause a crash or could
cause injury or death, you should immediately inform the National Highway Traffic
Safety Administration (NHTSA) in addition to notifying Mazda Motor Corporation (Your
Mazda Importer/Distributor).
If NHTSA receive ...
Mazda 6 Service Manual: Rear door removal/installation
Warning
Handling the side air bag sensor improperly can accidentally
deploy the side air bag module, which may seriously injure you. Read AIR BAG
SYSTEM SERVICE WARNINGS before working around the B-pillar areas. (See
SERVICE WARNINGS.)
Note
The side air bag sensor is located in t ...