NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
11 reportsClear category filterMileage unknown · Feb 2, 2012
Engine And Engine Cooling
WHILE DRIVING AT FREEZING TEMPERATURE, WHITE SMOKE CAME FROM THE ENGINE ROOM. I STOPPED THE ENGINE AND FOUND HUGE LEAK OF OIL FROM THE VALVE COVER. I NEEDED TO ADD 1 QUART OIL WHICH MEAN 1 QUART OF OIL WAS LEAKED OUT. I HAD A MECHANIC LOOK AT IT AND WAS TOLD THAT THE LEAK WAS CAUSED BY FREEZING OIL SEPARATOR. SINCE THE OIL SEPAR…
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WHILE DRIVING AT FREEZING TEMPERATURE, WHITE SMOKE CAME FROM THE ENGINE ROOM. I STOPPED THE ENGINE AND FOUND HUGE LEAK OF OIL FROM THE VALVE COVER. I NEEDED TO ADD 1 QUART OIL WHICH MEAN 1 QUART OF OIL WAS LEAKED OUT. I HAD A MECHANIC LOOK AT IT AND WAS TOLD THAT THE LEAK WAS CAUSED BY FREEZING OIL SEPARATOR. SINCE THE OIL SEPARATOR WAS DESIGNED INCORRECTLY, IT STOPS WORKING BY THE FROZEN CONDENSATE IN COLD CLIMATE. AND, IT CAUSE HIGH PRESSURE IN THE CRANKCASE AND CONSEQUENTLY OIL LEAK THROUGH THE VALVE COVER GASKET. THE PROBLEM MAY CAUSE A COMPLETE ENGINE FAILURE. *KB
NHTSA ODI #10446339
106,000 miles · Jan 31, 2012
Engine And Engine CoolingUnknown Or Other
FAULTY OIL SEPERATOR - CHRONIC PROBLEMS. *TT
NHTSA ODI #10446035
58,000 miles · Aug 24, 2011
Engine And Engine Cooling
TL* THE CONTACT OWNS A 2004 BMW X3. THE CONTACT STATED THAT THE VEHICLE WOULD STALL WHILE DRIVING AT VARIOUS SPEEDS. THE SERVICE ENGINE AND EML LIGHTS WOULD ALSO ILLUMINATE ON THE INSTRUMENT PANEL DURING THE FAILURES. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER, WHO ADVISED THE CONTACT TO REPLACE THE DME MODULE. THE MANUFACTUR…
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TL* THE CONTACT OWNS A 2004 BMW X3. THE CONTACT STATED THAT THE VEHICLE WOULD STALL WHILE DRIVING AT VARIOUS SPEEDS. THE SERVICE ENGINE AND EML LIGHTS WOULD ALSO ILLUMINATE ON THE INSTRUMENT PANEL DURING THE FAILURES. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER, WHO ADVISED THE CONTACT TO REPLACE THE DME MODULE. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE AND THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 58,000 AND THE CURRENT MILEAGE WAS 59,000.
NHTSA ODI #10421389
80,000 miles · Jan 12, 2011
Engine And Engine Cooling
TL*THE CONTACT OWNS A 2004 BMW X3. WHILE DRIVING APPROXIMATELY 10 MPH, THE VEHICLE STALLED. UPON RESTART, THE CONTACT WAS ABLE TO CONTINUE DRIVING. APPROXIMATELY TEN MINUTES LATER WHILE DRIVING 40 MPH, THE FAILURE OCCURRED AGAIN. THE BRAKE, 4X4, AND FUEL LIGHTS ILLUMINATED ON THE INSTRUMENT PANEL. THE CONTACT WAS ABLE TO DRIVE U…
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TL*THE CONTACT OWNS A 2004 BMW X3. WHILE DRIVING APPROXIMATELY 10 MPH, THE VEHICLE STALLED. UPON RESTART, THE CONTACT WAS ABLE TO CONTINUE DRIVING. APPROXIMATELY TEN MINUTES LATER WHILE DRIVING 40 MPH, THE FAILURE OCCURRED AGAIN. THE BRAKE, 4X4, AND FUEL LIGHTS ILLUMINATED ON THE INSTRUMENT PANEL. THE CONTACT WAS ABLE TO DRIVE UPON RESTART. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHERE THE CONTACT WAS INFORMED THAT THE DIGITAL ENGINE MANAGEMENT CONTROL WAS DEFECTIVE. THE VEHICLE HAD NOT BEEN REPAIRED. THE CURRENT AND FAILURE MILEAGES WERE APPROXIMATELY 80,000.
NHTSA ODI #10376369
107,215 miles · Nov 19, 2010
Engine And Engine Cooling
AUGUST 1, 2010 TOOK CAR TO LOCAL BMW DEALERSHIP NORTHPOINT TO HAVE AIR CONDITIONER CHECKED PRIOR TO 100,0000 MILE WARRANTY EXPIRING. TOLD BY DEALERSHIP COULD NOT REPEAT DIAGNOSIS OF WHY AIR WAS NOT COOLING. ON 11-15-2010 AT 107,215 AFTER WARRANTY HAS EXPIRED A 3RD PARTY DIAGNOSED CAR AS NEEDING A EVAPORATOR COIL WHICH IS A $2000…
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AUGUST 1, 2010 TOOK CAR TO LOCAL BMW DEALERSHIP NORTHPOINT TO HAVE AIR CONDITIONER CHECKED PRIOR TO 100,0000 MILE WARRANTY EXPIRING. TOLD BY DEALERSHIP COULD NOT REPEAT DIAGNOSIS OF WHY AIR WAS NOT COOLING. ON 11-15-2010 AT 107,215 AFTER WARRANTY HAS EXPIRED A 3RD PARTY DIAGNOSED CAR AS NEEDING A EVAPORATOR COIL WHICH IS A $2000-$2500 REPLACEMENT. IN ADDITION TO ANOTHER PROBLEM OF THE ENGINE BURNING AND LEAKING OIL WHICH IS $6000 TO REPLACE. *TR
NHTSA ODI #10366823
50,000 miles · Feb 19, 2010
Engine And Engine Cooling
1. NO ADVANCE WARNING. 2. FAILURE OF PCV VALVE SYSTEM, WITH RESULTING IMMEDIATE CONSUMPTION OF ENGINE OIL THROUGH COMBUSTION PROCESS. ENGINE STALLS AND VEHICLE IS BROUGHT TO COMPLETE STOP. THE FAILURE HAS OCCURRED THREE TIMES IN THE PAST 3 YEARS. 3. PCV RELATED HARDWARE REPLACED IN FIRST INCIDENT, WITH CLAIM THAT "REDE…
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1. NO ADVANCE WARNING. 2. FAILURE OF PCV VALVE SYSTEM, WITH RESULTING IMMEDIATE CONSUMPTION OF ENGINE OIL THROUGH COMBUSTION PROCESS. ENGINE STALLS AND VEHICLE IS BROUGHT TO COMPLETE STOP. THE FAILURE HAS OCCURRED THREE TIMES IN THE PAST 3 YEARS. 3. PCV RELATED HARDWARE REPLACED IN FIRST INCIDENT, WITH CLAIM THAT "REDESIGN" WOULD PREVENT RECURRENCE. SAME IN SECOND AND THIRD INCIDENT. THIS IS NOT ONLY AN INCONVENIENT PROBLEM, IT IS ALSO SAFETY RELATED, AS THE PROBLEM CAN RESULT IN THE VEHICLE BEING IMMOBILIZED IN TRAFFIC. IT IS ALSO NOT AN ISOLATED PROBLEM, BASED ON WHAT BMW TECHNICIANS AND OTHER MECHANICS HAVE RELATED. *TR
NHTSA ODI #10312274
Mileage unknown · Sep 14, 2007
Engine And Engine Cooling
ENGINE POWER FAILURE ON A 2004 BMW 330CI. REPEATED FAILURE OF ENGINE POWER WITHOUT WARNING (5 TIMES IN AN INTERSECTION). BMW REPLACED ENG. COMPUTER, THEN INSTALLED NEW SOFTWARE AFTER SECOND INCIDENT. ADDITIONALLY BMW REQUESTED THAT I START USING REGULAR GAS INSTEAD OF PREMIUM. THE ISSUE WENT AWAY AFTER THAT. *JB
NHTSA ODI #10203019
15,000 miles · Feb 17, 2007
Engine And Engine Cooling
FAILURE OF CRANKCASE VENTILATION VALVE IN 2004 3 SERIES BMW. THIS FAILURE WAS CAUSED BY MOISTURE BUILD UP IN THE VALVE, WHICH THEN FROZE AT AN EXTREMELY COLD TEMPERATURE, CAUSING THE ENGINE TO SEIZE. APPARENTLY, BMW HAS KNOWN ABOUT THIS PROBLEM, AS THE REPLACEMENT VALVE IS "RE-ENGINEERED". APPARENTLY, THIS PROBLEM ONLY OCCUR…
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FAILURE OF CRANKCASE VENTILATION VALVE IN 2004 3 SERIES BMW. THIS FAILURE WAS CAUSED BY MOISTURE BUILD UP IN THE VALVE, WHICH THEN FROZE AT AN EXTREMELY COLD TEMPERATURE, CAUSING THE ENGINE TO SEIZE. APPARENTLY, BMW HAS KNOWN ABOUT THIS PROBLEM, AS THE REPLACEMENT VALVE IS "RE-ENGINEERED". APPARENTLY, THIS PROBLEM ONLY OCCURS IN THE SIX CYLINDER ENGINE, AT EXTREMELY LOW TEMPERATURE, AND IN CARS WHICH ARE USED ONLY IN "SHORT TRIPS". THE CAR HAS BEEN DOWN FOR OVER TWO WEEKS, AWAITING PARTS. *NM
NHTSA ODI #10182864
27,000 miles · Feb 8, 2007
Engine And Engine Cooling
I HAVE A 2004 330CI WITH A 6 SPD TRANSMISSION. THIS HAS HAPPENED IN THE PAST BUT THIS PAST WEEKEND MY CAR WAS IN IDLE IN TRAFFIC. MY VEHICLE WOULD DO ROUGH IDLING AND THE ENGINE RPM WOULD DIP THEN SURGE EVENTUALLY LEADING THE CAR TO LOSE ENGINE POWER AND DIE. THIS CAN BE A SAFETY CONCERN WHEN THERE IS A POSSIBLY OF SOMEONE RE…
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I HAVE A 2004 330CI WITH A 6 SPD TRANSMISSION. THIS HAS HAPPENED IN THE PAST BUT THIS PAST WEEKEND MY CAR WAS IN IDLE IN TRAFFIC. MY VEHICLE WOULD DO ROUGH IDLING AND THE ENGINE RPM WOULD DIP THEN SURGE EVENTUALLY LEADING THE CAR TO LOSE ENGINE POWER AND DIE. THIS CAN BE A SAFETY CONCERN WHEN THERE IS A POSSIBLY OF SOMEONE REAR ENDING YOU IF THE CAR JUST LOSES ENGINE POWER. IT'S NOT A HUMAN PROBLEM BUT ENGINE DEFECT. *NM
NHTSA ODI #10181980
150 miles · Oct 5, 2005
Engine And Engine CoolingPower Train
DEAR NHTSA, I AM WRITING TODAY TO TELL YOU MY PERSONAL EPXERIENCE WITH MY CAR. I BOUGHT A BRAND NEW BMW 330CI ON JULY 18, 2003. ONE WEEK AFTER THE PURCHASE, THE TRANSMISSION STOPPED TO ENGAGE WHEN I START UP THE CAR. AFTER I BROUGHT IT IN FOR A FIX, I WAS TOLD IT WAS FIXED. TWO MONTHS LATER, THE SAME TRANSMISSION PROBLEM CA…
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DEAR NHTSA, I AM WRITING TODAY TO TELL YOU MY PERSONAL EPXERIENCE WITH MY CAR. I BOUGHT A BRAND NEW BMW 330CI ON JULY 18, 2003. ONE WEEK AFTER THE PURCHASE, THE TRANSMISSION STOPPED TO ENGAGE WHEN I START UP THE CAR. AFTER I BROUGHT IT IN FOR A FIX, I WAS TOLD IT WAS FIXED. TWO MONTHS LATER, THE SAME TRANSMISSION PROBLEM CAME BACK AGAIN, AND IT WAS DIAGNOSED TO NEED REPLACEMENT. IN DECEMBER 2003, THE TRANSMISSION IS REPLACED AFTER A FEW MONTH'S WAITING FOR THE NEW TRANSMISSION. IN MAY 2004, THE CAR'S ENGINE STOPPED IN TRAFFIC. AND BMW TOLD ME IT CAN NOT BE DIAGNOSED. FROM MAY 2004 TO MARCH 2005, THE ENGINE STALL-IN-TRAFFIC PROBLEM HAPPENED FIVE TIMES. NO CONCLUSIVE DIAGNOSTIC WAS EVER MADE. ON OCT 4, 2005, THE TRANSMISSION FAILS AGAIN IN THE MORNING. AND ALL THESE PROBLEMS LISTED HERE ARE JUST MAJOR SAFETY ISSUES, AND DOES NOT INCLUDE THE SMALL PROBLEMS SUCH AS DOOR GUARD COMPLETELY FALLS OFF. AT THIS POINT, AFTER THE PROBLEMS OF THIS CAR BECOMES CHRONICLE, I FEEL THAT MY SAFETY IS COMPROMISED, AND BWM WILL NOT HELP ME TO SOLVE THE PROBLEM. PLEASE HELP ME! SINCERELY, JINWEN XIAO. *JB
NHTSA ODI #10138742