This question is common.

The answer is: most models offered both brands, and MB did not document which was installed = EPC can not tell us what was installed..

Danger: You can not mix these brands = isolate them front axle or rear axle...

You must check every caliper on used cars..

The LOGO (BENDIX) or (ATE) is cast into the piston shell of the hose/bleeder side on each caliper.

A stiff wire brush may be needed to break away corrosion.

Attached Thumbnails

   

You can also tell the difference by the style of the pad retaining spring, Bendix on the left, ATE on the right.

Attached Thumbnails

 

__________________
83 SD

84 CD

It is strictly a SAFETY issue when you mix brands on the same axle.
The ATE - BENDIX piston bores are different diameter = unbalanced brake application = potential loss of control.

Been there, done that, wet and ice roads = even the best driver in the world may have extreme difficulty staying out of the ditch (or worse).

More data on the topic of brakes:
Brake:


.

__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/

Recycled for new members

__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/