Test Group Identification: Notes

BMW supplies test group information in the following 6 categories:

• CATALYST MONITORING 
• MISFIRE MONITORING 
• EVAPORATIVE SYSTEM MONITORING 
• SECONDARY AIR SYSTEM MONITORING 
• FUEL SYSTEM MONITORING 
• OXYGEN SENSOR MONITORING 

Specific engine family test group identification number (for example: WBMXV02.8M52  ) can be found on emission label in engine compartment. To cross reference test group category (catalyst monitoring, misfire monitoring, etc.) see BMW TEST GROUP IDENTIFICATION  table.

Engine Family Test Group (1)		Engine Type	Models
Catalyst Monitoring
WBMXV01.9M44		1.9L 4-Cyl., (M44)	Z3, 318ti, & 318i
WBMXV02.8M52		2.8L (M52) & 3.2L (S52) 6-Cyl.	M Coupe, M Roadster, M3, 328i, 328is & 528i
WBMXV02.8Z35		2.5L (M52) 6-Cyl.	Z3 & 323is
WBMXV04.4M62		4.4L (M62) V8	540i, 740i & 740iL
WBMXV05.4M73		5.4L (M62) V12	750iL
Misfire Monitoring
WBMXV01.9M44		1.9L 4-Cyl., (M44)	Z3, 318ti, & 318i
WBMXV02.8M52		2.8L (M52) & 3.2L (S52) 6-Cyl.	M Coupe, M Roadster, M3, 328i, 328is & 528i
WBMXV02.8Z35		2.5L (M52) 6-Cyl.	Z3 & 323is
WBMXV04.4M62		4.4L (M62) V8	540i, 740i, & 740iL
WBMXV05.4M73		5.4L (M73) V12	750iL
Evaporative System Monitoring
WBMXV01.9M44		1.9L 4-Cyl., (M44)	Z3, 318ti, & 318i
WBMXV02.8M52		2.8L (M52) & 3.2L (S52) 6-Cyl.	M Coupe, M Roadster, M3, 328i, 328is & 528i
WBMXV02.8Z35		2.5L (M52) 6-Cyl.	Z3 & 323is
WBMXV04.4M62		4.4L (M62) V8	540i, 740i & 740iL
WBMXV05.4M73		5.4L (M73) V12	750iL
Secondary Air System Monitoring
WBMXV01.9M44		1.9L 4-Cyl., (M44)	Z3, 318ti, & 318i
WBMXV02.8M52		2.8L (M52) & 3.2L (S52) 6-Cyl.	M Coupe, M Roadster, M3, 328i, 328is & 528i
WBMXV02.8Z35		2.5L (M52) 6-Cyl.	Z3 & 323is
Fuel System Monitoring
WBMXV01.9M44		1.9L 4-Cyl., (M44)	Z3, 318ti, & 318i
WBMXV02.8M52		2.8L (M52) & 3.2L (S52) 6-Cyl.	M Coupe, M Roadster, M3, 328i, 328is & 528i
WBMXV02.8Z35		2.5L (M52) 6-Cyl.	Z3 & 323is
WBMXV04.4M62		4.4L (M62) V8	540i, 740i & 740iL
WBMXV05.4M73		5.4L (M73) V12	750iL
Oxygen Sensor Monitoring
WBMXV01.9M44		1.9L 4-Cyl., (M44)	Z3, 318ti, & 318i
WBMXV02.8M52		2.8L (M52) & 3.2L (S52) 6-Cyl.	M Coupe, M Roadster, M3, 328i, 328is & 528i
WBMXV02.8Z35		2.5L (M52) 6-Cyl.	Z3 & 323is
WBMXV04.4M62		4.4L (M62) V8	540i, 740i & 740iL
WBMXV05.4M73		5.4L (M73) V12	750iL
(1) Test group reference identification can be found on under-hood emission label. LEV stands for Low Emission Vehicle. ULEV stands for Ultra Low Emission Vehicle. TLEV stands for Transitional Low Emission Vehicle.