Total Complaints
3 filings
BMW 540IAT · model year
1999 BMW 540IAT
3 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 1999BMW540IAT carries 3 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, 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 1999 540IAT is power train:automatic transmission with 1 filings, followed by engine and engine cooling:cooling system:radiator assembly (1) and service brakes, hydraulic:antilock/traction control/electronic limited slip:control unit/module (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 1999 540IAT. 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.
3
Complaints
0
Crashes
0
Fires
0
Injuries
0
Deaths
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
| Component | Count |
|---|---|
| POWER TRAIN:AUTOMATIC TRANSMISSION | 1 |
| ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY | 1 |
| SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE | 1 |
Recent Complaints
20040317SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
COMPLETE ABS FAILURE WHILE TRAVELING AT SPEEDS. THE ABS CONTROL MODULE CONTROLLED EACH WHEEL DIFFERENTLY AT DIFFERENT TIMES, CAUSING THE CAR TO BUCK WILDLY AT HIGHWAY SAFE SPEEDS. WHILE BRAKING, THE CONTROLLER WENT BAD (WAS REPORTED TO DEALER PREVIOUSLY AND TOLD IT WAS THE BRAKE PADS - CHANGED AND STILL HAD ISSUE) , LOCKED UP THE REAR WHEELS, CAUSED SLIDING CONDITION IN TRAFFIC, NEARLY COLLIDING WITH OTHER CARS AND UNDERPASS BARRICADE. THIS HAS HAPPENED NUMEROUS TIME AND HAS BEEN REPORTED TO DEALER (NONE AT SPEEDS - 10 MPH OR UNDER - CONTROLLABLE AT THOSE SPEEDS). *NM
20031110ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY
RADIATOR FAILURE ON 1999 540 TOURING - DISABLES THE VEHICLE NO MATTER WHERE YOU ARE FROM RUSH HOUR TRAFFIC WHERE THE PANIC COULD ENDANGER OTHER DRIVERS, TO THE MIDDLE OF NOWHERE IN THE DEAD OF WINTER BY YOURSELF. *AK - STEAM FROM FAILED RADIATOR BLOCKS VISION OF THE ROAD, OR WHATEVER ELSE IS IN THE DRIVERS SIDE FRONT CORNER OF THE VEHICLE. - FAILURE CAN NOT BE PREDICTED BY VISUAL INSPECTION OF THE RADIATOR.
Mileage: 61,000
20010221POWER TRAIN:AUTOMATIC TRANSMISSION
I HAVE EXPERIENCED AN OCCASIONAL HARD DOWNSHIFT OR CLUNK WHEN SLOWING MY VEHICLE AND THEN BRISKLY ACCELERATING. THIS IS VERY SIMILAR TO THE PROBLEM REPORTED IN SERVICE BULLETIN NUMBER 240300.*AK
Compare 1999BMW540IAT to Similar Vehicles
NHTSA Investigations
Frequently Asked Questions
How many complaints does the 1999 BMW 540IAT have?▼
The 1999 BMW 540IAT has 3 NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 1999 BMW 540IAT?▼
The most-complained component for the 1999 BMW 540IAT is POWER TRAIN:AUTOMATIC TRANSMISSION with 1 complaints. Other frequently reported areas include ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY and SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE.
Is the 1999 BMW 540IAT 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.
Read our methodology — how this data is sourced, computed, and verified.