Owners have filed 11 complaints
about the 2016 BMW 435I with NHTSA between 2018 and 2026.
The largest single group is the engine & cooling.
Across this model's run it ranks 3 of 3 worst.
The letter says how bad. This says what kind — whether this year drew
an unusual number of complaints, unusually dangerous
ones, or failures that arrived unusually early.
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 27
Against the median year of the BMW 435I. 50 means typical for this
model; 100 means roughly double.
Severity — 0
0% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — 68
40% of failures with a mileage on record happened under
36,000 miles, against a national rate of
29%.
Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade:
A
B
C
D
F
ungraded
What breaks on a 2016 BMW 435I
Every complaint is filed against a part. Follow any row for the complaints about that part alone.
Engine & Cooling
327.3%
Median failure at 107,000 miles
Other & Unspecified
218.2%
Median failure at 23,302 miles
Driver Assist & Collision Avoidance
19.1%
Fuel & Propulsion
19.1%
Steering
19.1%
Median failure at 70,000 miles
Airbags
19.1%
Electrical System
19.1%
Transmission & Drivetrain
19.1%
Median failure at 30,500 miles
When it fails
Odometer readings owners gave when they filed. About half of all
complaints include one.
Under 1,000 miles
120.0%
25,000 – 49,999 miles
240.0%
50,000 – 74,999 miles
120.0%
100,000 – 149,999 miles
120.0%
When owners complained
A spike years after the car went on sale usually means a part wearing
out on schedule across the whole fleet — the kind of pattern no single
owner can see from inside their own car.
May 2018peak 2May 2026
NHTSA investigations into the 2016 BMW 435I
An investigation is the step before a recall: the agency has seen enough
complaints to look into a pattern itself. An open one means it thinks
something may be wrong and nothing has been fixed yet.
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf.C...
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
San Ramon, CA
ELECTRICAL SYSTEM
I am submitting a safety complaint regarding my 2016 BMW 435i. My vehicle experienced a sudden water pump failure while I was driving on the freeway. Without warning, the vehicle immediately entered “limp mode,” causing a sudden and dangerous loss of power in active traffic. This created a serious safety hazard because surrounding vehicles had to quickly avoid my car to prevent a collision. I am aware that there is an existing recall and/or known issue involving electric water pump failures on certain BMW vehicles, including similar 2016 BMW models, but my VIN does not qualify for recall coverage despite experiencing the exact same failure and safety-related symptoms. I believe this defect should be investigated further because it creates a substantial risk to driver and public safety when the vehicle suddenly loses power at highway speeds. Additionally, my vehicle has an ongoing issue with the parking collision warning/driver assistance system. The system will randomly trigger collision warnings and emergency alerts even when I am driving safely with no obstacles or vehicles in front of me. These false warnings are distracting and could potentially cause unsafe driver reactions or unnecessary braking events. I request that NHTSA investigate both issues: 1. Sudden electric water pump failure causing immediate limp mode and loss of power while driving. 2. Malfunctioning collision warning system producing false collision alerts without hazards present. These issues present significant safety concerns and appear consistent with known defects affecting similar BMW vehicles. Vehicle Information: * Year: 2016 * Make: BMW * Model: 435iThe I would like to mention I am an active first responder (EMT) and would recommend addressing these safety concerns
NHTSA complaint #11738183 — an unverified report by a vehicle owner.
San Ramon, CA
BACK OVER PREVENTION: WARNINGS
I am submitting a safety complaint regarding my 2016 BMW 435i. My vehicle experienced a sudden water pump failure while I was driving on the freeway. Without warning, the vehicle immediately entered “limp mode,” causing a sudden and dangerous loss of power in active traffic. This created a serious safety hazard because surrounding vehicles had to quickly avoid my car to prevent a collision. I am aware that there is an existing recall and/or known issue involving electric water pump failures on certain BMW vehicles, including similar 2016 BMW models, but my VIN does not qualify for recall coverage despite experiencing the exact same failure and safety-related symptoms. I believe this defect should be investigated further because it creates a substantial risk to driver and public safety when the vehicle suddenly loses power at highway speeds. Additionally, my vehicle has an ongoing issue with the parking collision warning/driver assistance system. The system will randomly trigger collision warnings and emergency alerts even when I am driving safely with no obstacles or vehicles in front of me. These false warnings are distracting and could potentially cause unsafe driver reactions or unnecessary braking events. I request that NHTSA investigate both issues: 1. Sudden electric water pump failure causing immediate limp mode and loss of power while driving. 2. Malfunctioning collision warning system producing false collision alerts without hazards present. These issues present significant safety concerns and appear consistent with known defects affecting similar BMW vehicles. Vehicle Information: * Year: 2016 * Make: BMW * Model: 435iThe I would like to mention I am an active first responder (EMT) and would recommend addressing these safety concerns
NHTSA complaint #11738183 — an unverified report by a vehicle owner.
at 107,000 milesMeriden, CT
ENGINE AND ENGINE COOLING
The contact owns a 2016 BMW 435I. The contact stated that while starting the vehicle, the engine stalled. The battery warning light was illuminated. The vehicle failed to restart and was towed to the dealer. The dealer determined that the VANOS bolts had failed and needed to be replaced. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 23V707000 (Engine and Engine Cooling); however, the VIN was not included in the recall. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The failure mileage was approximately 107,000.
NHTSA complaint #11641634 — an unverified report by a vehicle owner.
Piedmont, SC
ENGINE
Water pump causing no start and high battery drain.
NHTSA complaint #11629560 — an unverified report by a vehicle owner.
Windermere, FL
AIR BAGS
Airbag sensors are defective. Vehicle states that restraint system is faulty.
NHTSA complaint #11514071 — an unverified report by a vehicle owner.
at 70,000 milesNew Hope, PA
STEERING
The contact owns a 2016 BMW 435I. The contact stated while driving at slow speeds, the chassis stabilization warning light was illuminated. The contact took the vehicle to the local dealer, where it was diagnosed with needing the electric power steering (EPS) to be replaced. The vehicle was not repaired. Upon investigation, the contact associated the failure with TSB: SIB321216, however the VIN was not included. The manufacturer had been informed of the failure. The failure mileage was approximately 70,000.
NHTSA complaint #11503962 — an unverified report by a vehicle owner.
Cypress, TX
FUEL/PROPULSION SYSTEM
A strong odor of gasoline was noted and it dripped from the tank when the car was driven. Mechanic reported the tank had a leaking seam which he would patch with plastic, so the car can be used while waiting for a replacement tank.
NHTSA complaint #11474406 — an unverified report by a vehicle owner.
Long Beach, CA
ENGINE
water entered the air intake at front of vehicle and caused engine damage.
NHTSA complaint #11418919 — an unverified report by a vehicle owner.
at 5 milesLong Island City, NY
UNKNOWN OR OTHER
BACK UP CAMERA CUTS OFF WHEN IN REVERSE ALL THE TIME
NHTSA complaint #11376398 — an unverified report by a vehicle owner.
at 46,600 milesHouston, TX
UNKNOWN OR OTHER
WITH NO EVIDENCE OF FOREIGN OBJECT DAMAGE, SUNROOF EXPLODED ON A CLEAR FREEWAY AT FREEWAY SPEED. INTERIOR TEMP 74F, AMBIENT 93F. SUNSHADE WAS CLOSED, BUT GLASS FRAGMENTS LEAKED THROUGH THE VENT HOLES IN THE SUNSHADE. PAINT DAMAGE TO TRUNK. POTENTIAL SAFETY HAZARD TO OTHER MOTORISTS. OF NOTE THE GLASS IS TEMPERED, NOT LAMINATED, HENCE THE ELEVATED POTENTIAL FOR INJURY AND DAMAGE.
NHTSA complaint #11099111 — an unverified report by a vehicle owner.
at 30,500 milesDenver, CO
POWER TRAIN
I WAS DRIVING MY VEHICLE IN DALLAS, TX AND MULTIPLE TIMES THE CAR ENGINE & ALL POWER SHUT OFF, AND THE CAR SHIFTED ITSELF INTO NEUTRAL. I SUSPECT THERE IS AN ISSUE WITH THE AUTO STOP/START FEATURE OR SOMETHING MORE. A CAR SHOULD NEVER SHIFT ITSELF INTO REVERSE WHEN YOU ARE DRIVING. BOTH TIMES ALMOST CAUSED AN ACCIDENT ON THE FREEWAY AS THE CAR CAME TO A SUDDEN HALT AND I HAD NO CONTROL WITH IT SHIFTING INTO N. THE BMW DEALERSHIP & BMW ARE CLAIMING NOTHING IS WRONG. I DO NOT FEEL COMFORTABLE ACCEPTING THIS VEHICLE BACK UNTIL THIS ISSUE IS RESOLVED AND FEEL THE GOVERNMENT SHOULD LOOK INTO ANY ISSUE OF A VEHICLE AUTOMATICALLY SHIFTING INTO N AND POWERING DOWN WHILE DRIVING.
NHTSA complaint #11096753 — an unverified report by a vehicle owner.