BMW 730I · model year

1991 BMW 730I

1 NHTSA complaints for this specific cohort.

NHTSA overall rating

Not crash-tested

New Car Assessment Program

The 1991BMW730I carries 1 consumer safety complaint in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 0 injuries, 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 730I is visibility:defroster/defogger/hvac system:heater core with 1 filings. 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 730I. 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.

1
Complaints
0
Crashes
0
Fires
0
Injuries
0
Deaths

Total Complaints

1 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
VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE1

Recent Complaints

19991004VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE

OOLANT SPRAYED OUT FROM THE HEATER CORE WHICH EXPLODED. ALSO, THERE WAS AN ODOR COMING FROM THE VEHICLE , AND ALL THE WINDOWS FOGGED UP. *AK

Compare 1991BMW730I to Similar Vehicles

NHTSA Investigations

View all investigations

Frequently Asked Questions

How many complaints does the 1991 BMW 730I have?
The 1991 BMW 730I has 1 NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 1991 BMW 730I?
The most-complained component for the 1991 BMW 730I is VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE with 1 complaints. Other frequently reported areas include various components.
Is the 1991 BMW 730I 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.