BMW 850I · model year

1991 BMW 850I

11 NHTSA complaints for this specific cohort.

NHTSA overall rating

Not crash-tested

New Car Assessment Program

The 1991BMW850I carries 11 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 1 injury, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.

Component-level analysis is where model-year complaints become actionable: the top complaint category for the 1991 850I is exterior lighting:headlights with 4 filings, followed by service brakes, hydraulic:antilock/traction control/electronic limited slip (1) and suspension:rear (1). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.

NHTSA currently has 34 investigation files overlapping the 1991 850I. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.

11
Complaints
0
Crashes
0
Fires
1
Injuries
0
Deaths

Total Complaints

11 filings

Crashes Reported

0 reports

Source

NHTSA ODI

Federal complaints database

Complaints vs. fleet median (215)

At or below the fleet median complaint volume.

Complaints by Component

ComponentCount
EXTERIOR LIGHTING:HEADLIGHTS4
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP1
SUSPENSION:REAR1
ENGINE AND ENGINE COOLING:COOLING SYSTEM1
ENGINE AND ENGINE COOLING:ENGINE1
ENGINE AND ENGINE COOLING1
EXTERIOR LIGHTING:HEADLIGHTS:SWITCH1
AIR BAGS1

Recent Complaints

20171029AIR BAGS

STARTED MY BMW 850I, DRIVE HALF A BLOCK DOWN THE STREET, THE AIRBAG BLOW , BURN MY HANDS. I CAN TAKE PICTURE OF THE BROKEN AIRBAG IN THE STEERING WHEEL IF NEEDED.

Mileage: 78,000

20040526EXTERIOR LIGHTING:HEADLIGHTS

THE DRIVER NOTICED THAT THE HEADLIGHT ADJUSTER WAS BROKEN. THIS CAUSED POOR VISIBILITY WHILE DRIVING AT NIGHT. THE CONSUMER TOOK THE VEHICLE TO THE DEALER AND WAS INFORMED THAT THE HEADLIGHTS ADJUSTER NEEDED TO BE REPLACED. *NM THE HEADLIGHTS WERE NOT HIGH ENOUGH TO SHINE ON THE ROAD TO ALLOW THE CONSUMER TO VIEW THE ROAD. THE LIGHTS WOULD ONLY GO ABOUT 15-20 FEET IN FRONT OF THE VEHICLE. *SC *JB

20020904EXTERIOR LIGHTING:HEADLIGHTS

BOTH HEADLIGHT ADJUSTMENT MECHAISMS HAVE REPEATEDLY FAILED. THIS IS AN ONGOING COMPLAINT WITH BMW 8 SERIES OWNERS. WHEN THE ADJUSTMENT MECHANISM FAILS THE HEADLIGHT BUCKETS POINT DOWNWARDS SO THAT THE AMOUNT OF ROAD VISIBLE TO THE DRIVER IS 25 FEET OR LESS. BMW HAS A "FIX" FOR THIS WHICH CONSISTS OF "PEENING" A PLASTIC ADJUSTMENT WHEEL TO THE ADJUSTMENT SHAFT. THIS USUALLY FAILS WITHIN SEVERAL THOUSAND MILES. BMW THEN SAYS TO BUY A NEW HEADLIGHT BUCKET... $4-500 TO FIX A $2.00 PART. SOMETIME, OR MAYBE IT HA ALREADY HAPPEND THIS IS GOING TO CAUSE A MAJOR ACCIDENT OR A PEDESTRIAN FATALITY DUE TO THE FACT THAT THE LIGHTS ARE NOT PROJECTING FAR ENOUGH FOR A DRIVER TO SEE A REASONABLE DISTANCE DOWN THE HIGHWAY. I HAVE CONTACTED BMW AND HAVE YET TO RECIVE THE COURTESY OF A RETURN CALL. PLEASE RESPOND TO THIS COMPLAINT WITH WHAT ACTION THAT YOU MIGHT BE TAKING REGARDING THIS MATTER.*AK

20020722EXTERIOR LIGHTING:HEADLIGHTS

AFTER FAILURE, BMW TELLS YOU TO BUY NEW HEADLIGHT BUCKETS FOR $650 WITH NEW ADJUSTERS IN THEM, WHICH WILL FAIL AGAIN AFTER TWO TO FOUR YEARS, DEPENDING ON THE MILEAGE. AFTER FAILURE THE LIGHTS SHINE EXTREMLY LOW WITHOUT COVERING THE STREET IN FRONT OF YOU, RESULTING IN A REAL SAFETY HAZARD.

20020424EXTERIOR LIGHTING:HEADLIGHTS

HEADLIGHT HOUSING BROKEN. POINTS DOWNWARD.*AK

20020418EXTERIOR LIGHTING:HEADLIGHTS:SWITCH

CONSUMER STATES THE CONVERTIBLE HEADLIGHTS KNOB ARE NOT FUNCTIONING CORRECTLY MECHANIC AND MANUFACTURE HAVE BEEN NOTIFIED HOWEVER TO RESOLVE PROBLEM MANUFACTURE HAS OFFERED TO REPLACE THE WHOLE LIGHTS FOR $400.00 PER LIGHTS. NLM

20000209ENGINE AND ENGINE COOLING:COOLING SYSTEM

THIS CAR LOSES COOLANT, OVERHEATS, AND BLOWS A HEAD GASKET, AND NOW POSSIBLY NEEDS NEW CYLINDER HEADS. BMW MECHANIC STATES THAT THE TEMPERATUTE GAUGE IS NOT SUPPOSED TO TELL YOU THE ENGINE IS OVERHEATING IF THE COOLANT HAS ALREADY COMPLETELY LEAKED OUT OF THE SYSTEM. THAT THE GAUGE DOES NOT REGISTER THE EMPTY AIR IN A NOW EMPTY COOLANT SYSTEM. IN MY OPINION THE TEMP GUAGE SHOULD TELL ME THE POSSIBILITY OF MY CAR OVERHEATING SO THAT I CAN SHUT DOWN THE ENGINE AND HAVE IT REPAIRED. THIS HAS OCCURRED TWICE($5,000 FIRST TIME) AND NOW AN ESTIMATED $9,000-15,000 DEPENDING ON EXTENT OF DAMAGE. PLEASE SEND ANY INFORMATION YOU MAY HAVE ON THIS PROBLEM WITH THIS VEHICLE. A LOCAL REPUTABLE IMPORT REPAIR SHOP INFORMED ME THAT THIS HAPPENS WITH THIS CAR AND THAT THEY CONSIDER IT A COMMON DEFECT/OCCURRENCE. TO COMBAT THIS THEY EVEN HAVE THEIR OWN SOLUTION MY DRILLING EXTRA HOLES IN THE ENGINE AND BOLTING IT DOWN WITHOUT HAVING TO EVEN USE A HEADGASKET. IF THIS IS ACCEPTED COMMON KNOWLEDGE TH

20000209ENGINE AND ENGINE COOLING:ENGINE

THIS CAR LOSES COOLANT, OVERHEATS, AND BLOWS A HEAD GASKET, AND NOW POSSIBLY NEEDS NEW CYLINDER HEADS. BMW MECHANIC STATES THAT THE TEMPERATUTE GAUGE IS NOT SUPPOSED TO TELL YOU THE ENGINE IS OVERHEATING IF THE COOLANT HAS ALREADY COMPLETELY LEAKED OUT OF THE SYSTEM. THAT THE GAUGE DOES NOT REGISTER THE EMPTY AIR IN A NOW EMPTY COOLANT SYSTEM. IN MY OPINION THE TEMP GUAGE SHOULD TELL ME THE POSSIBILITY OF MY CAR OVERHEATING SO THAT I CAN SHUT DOWN THE ENGINE AND HAVE IT REPAIRED. THIS HAS OCCURRED TWICE($5,000 FIRST TIME) AND NOW AN ESTIMATED $9,000-15,000 DEPENDING ON EXTENT OF DAMAGE. PLEASE SEND ANY INFORMATION YOU MAY HAVE ON THIS PROBLEM WITH THIS VEHICLE. A LOCAL REPUTABLE IMPORT REPAIR SHOP INFORMED ME THAT THIS HAPPENS WITH THIS CAR AND THAT THEY CONSIDER IT A COMMON DEFECT/OCCURRENCE. TO COMBAT THIS THEY EVEN HAVE THEIR OWN SOLUTION MY DRILLING EXTRA HOLES IN THE ENGINE AND BOLTING IT DOWN WITHOUT HAVING TO EVEN USE A HEADGASKET. IF THIS IS ACCEPTED COMMON KNOWLEDGE TH

20000209ENGINE AND ENGINE COOLING

THIS CAR LOSES COOLANT, OVERHEATS, AND BLOWS A HEAD GASKET, AND NOW POSSIBLY NEEDS NEW CYLINDER HEADS. BMW MECHANIC STATES THAT THE TEMPERATUTE GAUGE IS NOT SUPPOSED TO TELL YOU THE ENGINE IS OVERHEATING IF THE COOLANT HAS ALREADY COMPLETELY LEAKED OUT OF THE SYSTEM. THAT THE GAUGE DOES NOT REGISTER THE EMPTY AIR IN A NOW EMPTY COOLANT SYSTEM. IN MY OPINION THE TEMP GUAGE SHOULD TELL ME THE POSSIBILITY OF MY CAR OVERHEATING SO THAT I CAN SHUT DOWN THE ENGINE AND HAVE IT REPAIRED. THIS HAS OCCURRED TWICE($5,000 FIRST TIME) AND NOW AN ESTIMATED $9,000-15,000 DEPENDING ON EXTENT OF DAMAGE. PLEASE SEND ANY INFORMATION YOU MAY HAVE ON THIS PROBLEM WITH THIS VEHICLE. A LOCAL REPUTABLE IMPORT REPAIR SHOP INFORMED ME THAT THIS HAPPENS WITH THIS CAR AND THAT THEY CONSIDER IT A COMMON DEFECT/OCCURRENCE. TO COMBAT THIS THEY EVEN HAVE THEIR OWN SOLUTION MY DRILLING EXTRA HOLES IN THE ENGINE AND BOLTING IT DOWN WITHOUT HAVING TO EVEN USE A HEADGASKET. IF THIS IS ACCEPTED COMMON KNOWLEDGE TH

19981020SUSPENSION:REAR

SHOCK SUPPORT CAME COMPLETELY OUT OF THE BODY OF THE VEHICLE ON TWO OCCASIONS.

19980518SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP

BRAKES CONTINUE TO FAIL ALMOST RESULTING IN AN ACCIDENT.

Compare 1991BMW850I to Similar Vehicles

NHTSA Investigations

View all investigations

Frequently Asked Questions

How many complaints does the 1991 BMW 850I have?
The 1991 BMW 850I has 11 NHTSA complaints, 0 crashes, 0 fires, 1 injuries, and 0 deaths reported.
What are the most common problems with the 1991 BMW 850I?
The most-complained component for the 1991 BMW 850I is EXTERIOR LIGHTING:HEADLIGHTS with 4 complaints. Other frequently reported areas include SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP and SUSPENSION:REAR.
Is the 1991 BMW 850I safe to buy?
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.

Vehicle Safety Guides

Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.