Owners have filed 36 complaints
about the 2018 BMW 320I with NHTSA between 2018 and 2026.
The largest single group is the electrical system.
Across this model's run it ranks 2 of 6 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 — 47
Against the median year of the BMW 320I. 50 means typical for this
model; 100 means roughly double.
Severity — 100
55.6% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — 100
75% 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 2018 BMW 320I
Every complaint is filed against a part. Follow any row for the complaints about that part alone.
Electrical System
719.4%
2 crashes, 0 fires · median 9,500 mi
Fuel & Propulsion
513.9%
Median failure at 65,500 miles
Airbags
513.9%
2 crashes, 0 fires · median 3,900 mi
Engine & Cooling
513.9%
3 crashes, 0 fires · median 10,650 mi
Brakes
38.3%
2 crashes, 0 fires · median 46,500 mi
Transmission & Drivetrain
38.3%
1 crashes, 0 fires · median 72,000 mi
Other & Unspecified
25.6%
1 crashes, 0 fires · median 9,000 mi
Acceleration & Cruise Control
25.6%
1 crashes, 0 fires · median 7,150 mi
Child Seats
12.8%
Stability & Traction Control
12.8%
Median failure at 9,000 miles
Seats
12.8%
Steering
12.8%
1 crashes, 0 fires
When it fails
Odometer readings owners gave when they filed. About half of all
complaints include one.
Under 1,000 miles
318.8%
1,000 – 9,999 miles
425.0%
10,000 – 24,999 miles
531.3%
25,000 – 49,999 miles
16.3%
50,000 – 74,999 miles
212.5%
75,000 – 99,999 miles
16.3%
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.
Mar 2018peak 4Jul 2026
NHTSA investigations into the 2018 BMW 320I
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...
Complaints that involved harm
Reports where the owner recorded a crash, a fire, an injury or a death.
West Palm Beach, FLCrash
AIR BAGS
On 09/16/25, I was exiting the Florida turnpike onto Sawgrass Highway via the exit ramp on exit 71. As I decelerated from 60 MPH to 35 MPH to match the speed of the exit ramp, I was in the left most lane in the two-lane exit ramp. My car spun out and I lost control of the vehicle, which caused the vehicle to spin through the two lanes of the ramp several times and ended up drifting onto the edge of the retention pond on the left of the exit ramp. I probably had spun around over three times and my car hung off the edge of the retention pond with the only thing preventing my car from falling into the pond being the rocks to prevent erosion on the side of the pond. The airbags on the drivers side and the curtain airbags both had deployed upon the car coming to a stop. The seatbelts were also locked upon trying to exit the car. The car was fully serviced prior to the incident and in good standing with BMW. The brakes were recently replaced a month ago and regular milestone inspections were conducted on the car. The road conditions on the day in question were great with no water or puddles on the road.
NHTSA complaint #11700173 — an unverified report by a vehicle owner.
West Palm Beach, FLCrash
STEERING
On 09/16/25, I was exiting the Florida turnpike onto Sawgrass Highway via the exit ramp on exit 71. As I decelerated from 60 MPH to 35 MPH to match the speed of the exit ramp, I was in the left most lane in the two-lane exit ramp. My car spun out and I lost control of the vehicle, which caused the vehicle to spin through the two lanes of the ramp several times and ended up drifting onto the edge of the retention pond on the left of the exit ramp. I probably had spun around over three times and my car hung off the edge of the retention pond with the only thing preventing my car from falling into the pond being the rocks to prevent erosion on the side of the pond. The airbags on the drivers side and the curtain airbags both had deployed upon the car coming to a stop. The seatbelts were also locked upon trying to exit the car. The car was fully serviced prior to the incident and in good standing with BMW. The brakes were recently replaced a month ago and regular milestone inspections were conducted on the car. The road conditions on the day in question were great with no water or puddles on the road.
NHTSA complaint #11700173 — an unverified report by a vehicle owner.
West Palm Beach, FLCrash
SERVICE BRAKES
On 09/16/25, I was exiting the Florida turnpike onto Sawgrass Highway via the exit ramp on exit 71. As I decelerated from 60 MPH to 35 MPH to match the speed of the exit ramp, I was in the left most lane in the two-lane exit ramp. My car spun out and I lost control of the vehicle, which caused the vehicle to spin through the two lanes of the ramp several times and ended up drifting onto the edge of the retention pond on the left of the exit ramp. I probably had spun around over three times and my car hung off the edge of the retention pond with the only thing preventing my car from falling into the pond being the rocks to prevent erosion on the side of the pond. The airbags on the drivers side and the curtain airbags both had deployed upon the car coming to a stop. The seatbelts were also locked upon trying to exit the car. The car was fully serviced prior to the incident and in good standing with BMW. The brakes were recently replaced a month ago and regular milestone inspections were conducted on the car. The road conditions on the day in question were great with no water or puddles on the road.
NHTSA complaint #11700173 — an unverified report by a vehicle owner.
Fresno, CACrash1 injured
POWER TRAIN
Rattling noise we’ll driving and when going over 30 mph can lose control
NHTSA complaint #11546214 — an unverified report by a vehicle owner.
Fresno, CACrash1 injured
ELECTRICAL SYSTEM
Rattling noise we’ll driving and when going over 30 mph can lose control
NHTSA complaint #11546214 — an unverified report by a vehicle owner.
Fresno, CACrash1 injured
ENGINE
Rattling noise we’ll driving and when going over 30 mph can lose control
NHTSA complaint #11546214 — an unverified report by a vehicle owner.
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
Framingham, MA
Chest Clip, Buckle, Harness
After tightening the harness, the straps slip and loosen completely on their own without pressing the release button. This happens due to normal movement while driving, leaving my child completely unrestrained and unprotected. I have already followed the manufacturer guidelines to thoroughly clean the adjuster mechanism and the strap area with warm water to rule out any debris or buildup. While it seems to hold for a brief period, the mechanical failure returns after a couple of days.
NHTSA complaint #11752983 — an unverified report by a vehicle owner.
at 72,000 milesSan Antonio, TX
POWER TRAIN
The contact owns a 2018 BMW 320I. The contact stated that while the vehicle was parked, the vehicle unexpectedly started rolling forward. The brake pedal was depressed; however, the brakes failed to immediately respond. The contact stated that the vehicle eventually came to a stop. The contact referenced an unknown recall for the failure, but the VIN was not under recall. The vehicle was driven to an independent mechanic but was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 72,000.
NHTSA complaint #11710744 — an unverified report by a vehicle owner.
at 72,000 milesSan Antonio, TX
SERVICE BRAKES, HYDRAULIC
The contact owns a 2018 BMW 320I. The contact stated that while the vehicle was parked, the vehicle unexpectedly started rolling forward. The brake pedal was depressed; however, the brakes failed to immediately respond. The contact stated that the vehicle eventually came to a stop. The contact referenced an unknown recall for the failure, but the VIN was not under recall. The vehicle was driven to an independent mechanic but was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 72,000.
NHTSA complaint #11710744 — an unverified report by a vehicle owner.
West Palm Beach, FLCrash
AIR BAGS
On 09/16/25, I was exiting the Florida turnpike onto Sawgrass Highway via the exit ramp on exit 71. As I decelerated from 60 MPH to 35 MPH to match the speed of the exit ramp, I was in the left most lane in the two-lane exit ramp. My car spun out and I lost control of the vehicle, which caused the vehicle to spin through the two lanes of the ramp several times and ended up drifting onto the edge of the retention pond on the left of the exit ramp. I probably had spun around over three times and my car hung off the edge of the retention pond with the only thing preventing my car from falling into the pond being the rocks to prevent erosion on the side of the pond. The airbags on the drivers side and the curtain airbags both had deployed upon the car coming to a stop. The seatbelts were also locked upon trying to exit the car. The car was fully serviced prior to the incident and in good standing with BMW. The brakes were recently replaced a month ago and regular milestone inspections were conducted on the car. The road conditions on the day in question were great with no water or puddles on the road.
NHTSA complaint #11700173 — an unverified report by a vehicle owner.
West Palm Beach, FLCrash
STEERING
On 09/16/25, I was exiting the Florida turnpike onto Sawgrass Highway via the exit ramp on exit 71. As I decelerated from 60 MPH to 35 MPH to match the speed of the exit ramp, I was in the left most lane in the two-lane exit ramp. My car spun out and I lost control of the vehicle, which caused the vehicle to spin through the two lanes of the ramp several times and ended up drifting onto the edge of the retention pond on the left of the exit ramp. I probably had spun around over three times and my car hung off the edge of the retention pond with the only thing preventing my car from falling into the pond being the rocks to prevent erosion on the side of the pond. The airbags on the drivers side and the curtain airbags both had deployed upon the car coming to a stop. The seatbelts were also locked upon trying to exit the car. The car was fully serviced prior to the incident and in good standing with BMW. The brakes were recently replaced a month ago and regular milestone inspections were conducted on the car. The road conditions on the day in question were great with no water or puddles on the road.
NHTSA complaint #11700173 — an unverified report by a vehicle owner.
West Palm Beach, FLCrash
SERVICE BRAKES
On 09/16/25, I was exiting the Florida turnpike onto Sawgrass Highway via the exit ramp on exit 71. As I decelerated from 60 MPH to 35 MPH to match the speed of the exit ramp, I was in the left most lane in the two-lane exit ramp. My car spun out and I lost control of the vehicle, which caused the vehicle to spin through the two lanes of the ramp several times and ended up drifting onto the edge of the retention pond on the left of the exit ramp. I probably had spun around over three times and my car hung off the edge of the retention pond with the only thing preventing my car from falling into the pond being the rocks to prevent erosion on the side of the pond. The airbags on the drivers side and the curtain airbags both had deployed upon the car coming to a stop. The seatbelts were also locked upon trying to exit the car. The car was fully serviced prior to the incident and in good standing with BMW. The brakes were recently replaced a month ago and regular milestone inspections were conducted on the car. The road conditions on the day in question were great with no water or puddles on the road.
NHTSA complaint #11700173 — an unverified report by a vehicle owner.
at 84,000 milesTyler, TX
FUEL SYSTEM, DIESEL
The contact owns a 2018 BMW 320I. The contact stated that while driving 55 MPH, the vehicle failed to accelerate as intended while depressing the accelerator pedal. The message Engine coolant system, coolant pump outside of speed tolerance" and code 20A701 was displayed. The contact stated that the vehicle failed to accelerate, and the contact drove 8 MPH back to the residence. A fuel-burning odor was on the interior and exterior of the vehicle. The vehicle was not taken to the dealer or an independent mechanic. The contact stated that on a separate occasion, while her husband was driving, the failure reoccurred. The contact's husband arrived at the residence and became aware that the water pump had failed and was no longer functioning as intended. Upon further investigation, the contact related the failure to NHTSA Campaign Number: 21V907000 (FUEL SYSTEM, DIESEL). However, the VIN was not included. The vehicle was not repaired and was parked at the residence. The manufacturer was made aware of the failure and referred the contact to the NHSTA Hotline for assistance. The failure mileage was approximately 84,000.
NHTSA complaint #11697512 — an unverified report by a vehicle owner.
Tujunga, CA
FUEL/PROPULSION SYSTEM
• What component or system failed or malfunctioned, and is it available for inspection upon request? The plastic fuel tank failed and developed a leak. Yes, the tank is available for inspection upon request. • How was your safety or the safety of others put at risk? A leaking fuel tank poses a serious fire and explosion hazard, especially when the vehicle is operating or parked near heat sources. Gasoline fumes were noticeable, creating an increased risk of ignition and exposure to toxic vapors. • Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. The problem was confirmed by an independent mechanic, who verified the leak in the fuel tank. • Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? The vehicle has not yet been inspected by BMW or other officials. Only an independent mechanic has inspected it so far. • Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Yes. A check engine light appeared shortly before the failure. In addition, a strong smell of gasoline was noticed, followed by visible leaking fuel. There is an open recall on the BMW F30 BMW 320i, production date 2013 to 2018, production dates July 02, 2012 to March 23, 2018 for the “plastic fuel tank.” I own a 2018 BMW 320i, manufactured April 2018 which is not included in the recall for the “plastic fuel tank.” However, I noticed a gasoline smell and the fuel tank is leaking. Upon further research, inspection and after notifying a mechanic, the fuel tank for my vehicle is the exact same one as the plastic fuel tank indicated in the BMW recall. My production date is a week later than the recall production date, but the fuel tank is the same exact fuel tank that has been recalled. The vehicle has developed a serious safety defect in the plastic fuel tank, which is leaking gasoline and emitting fumes.
NHTSA complaint #11689060 — an unverified report by a vehicle owner.
Hastings, NE
ENGINE
Was simply driving my vehicle to work. It started overheating parked it right away before it got worse as the car alerted had it towed to a shop. The shop informed me that the motor was blown in the pistons went through the motor something with the oil the mechanic and I were looking further into this and it looks like my make and model in year had some recalls about the motor overheating in the past so I would really like this looked into as this might be a recall I’m not sure what else this could be or why this would happen with such low miles
NHTSA complaint #11660219 — an unverified report by a vehicle owner.
Windermere, FL
AIR BAGS
My passenger airbag sensor malfunctioned and the repair is over two thousand dollars. The car is only 6 years old and I believe airbags should last longer than 6 years. BMW has extended warranties for airbags on some models (mine not included) for 15 years without mileage limitation. If a collision occurs, my passenger would be in extreme danger.
NHTSA complaint #11629707 — an unverified report by a vehicle owner.
Riverside, CA
FUEL/PROPULSION SYSTEM
Gas tank began leaking from top of blind flange, similar to other extended warranties (SIB 01 03 22 and SIB 01 07 22). BMW is refusing to cover my specific model year (I have sent letters requesting reimbursement and called multiple times). It created an explosion hazard in my garage. Had mechanic repair, I do not have part. Cost $2,000 for new tank that will probably develop same issue. There were no warning lamps.
NHTSA complaint #11624760 — an unverified report by a vehicle owner.
Houston, TX
POWER TRAIN
My 2018 bmw 320 stalls and cuts off when I come to a stop. Very dangerous. It has cut off in the middle of the road. I have checked online to see if this is a common issue. Other bmw owners have reported this same issue. There has been a recall on other bmw models with this same issue from 2014-2018 for fuel system and fuel pump that may cause this issue. Letters were sent out I. January of 2022. My 2018 bmw 320si has not been included in this recall for some odd reason. When car shuts off a warning message appears on screen. One message states “transmission not in park.” Or “drivetrain malfunction”. This began to happen on November 2022. I have taken my vehicle to two dealers. One was an independent repair shop and the other was a bmw service center. Both reported issues with fuel pump that would cause this problem.
NHTSA complaint #11607009 — an unverified report by a vehicle owner.
Houston, TX
FUEL/PROPULSION SYSTEM
My 2018 bmw 320 stalls and cuts off when I come to a stop. Very dangerous. It has cut off in the middle of the road. I have checked online to see if this is a common issue. Other bmw owners have reported this same issue. There has been a recall on other bmw models with this same issue from 2014-2018 for fuel system and fuel pump that may cause this issue. Letters were sent out I. January of 2022. My 2018 bmw 320si has not been included in this recall for some odd reason. When car shuts off a warning message appears on screen. One message states “transmission not in park.” Or “drivetrain malfunction”. This began to happen on November 2022. I have taken my vehicle to two dealers. One was an independent repair shop and the other was a bmw service center. Both reported issues with fuel pump that would cause this problem.
NHTSA complaint #11607009 — an unverified report by a vehicle owner.
Pittsburgh, PA
ELECTRICAL SYSTEM
The electrical call system malfunctions. I’ve done extensive research and actually confirmed with Garret today at A&L BMW that there is a problem in the manufacturing of the shark fin. The gasket that BMW uses does not hole up and the sealant does not keep water from leaking into the fin. Every time it rains/snows or the vehicle is wet the system malfunctions. Currently it only has the ability to affect me if I were in a wreck and won’t notify emergency services. This has the ability to shut down all electrical functions in my car and has been a common issue in BMW dating back as far as 2015. I called them in April to have it looked at, but I didn’t understand the problem and it had ceased. But since the weather has now began to be more frequently wet, this problem has become more persistent. Now they won’t cover because the final warranty expired in December of 2023. This should be recalled because it is a manufacturing issue.
NHTSA complaint #11566233 — an unverified report by a vehicle owner.
Frisco, TX
SEATS
I was driving to home, Nobody is traveling with me. Suddenly SRS System gave me a warning that "Restraint System Malfunction" .I went to the dealer he diagnosed and told that. Passenger Seat Occupancy sensor failure, that will prevent the deployment of Airbags. The vehicle mileage is less than 34k. They fixed and charged me for $1958.71.
NHTSA complaint #11555355 — an unverified report by a vehicle owner.
Frisco, TX
AIR BAGS
I was driving to home, Nobody is traveling with me. Suddenly SRS System gave me a warning that "Restraint System Malfunction" .I went to the dealer he diagnosed and told that. Passenger Seat Occupancy sensor failure, that will prevent the deployment of Airbags. The vehicle mileage is less than 34k. They fixed and charged me for $1958.71.
NHTSA complaint #11555355 — an unverified report by a vehicle owner.
Frisco, TX
AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION
I was driving to home, Nobody is traveling with me. Suddenly SRS System gave me a warning that "Restraint System Malfunction" .I went to the dealer he diagnosed and told that. Passenger Seat Occupancy sensor failure, that will prevent the deployment of Airbags. The vehicle mileage is less than 34k. They fixed and charged me for $1958.71.
NHTSA complaint #11555355 — an unverified report by a vehicle owner.
Fresno, CACrash1 injured
POWER TRAIN
Rattling noise we’ll driving and when going over 30 mph can lose control
NHTSA complaint #11546214 — an unverified report by a vehicle owner.
Fresno, CACrash1 injured
ELECTRICAL SYSTEM
Rattling noise we’ll driving and when going over 30 mph can lose control
NHTSA complaint #11546214 — an unverified report by a vehicle owner.
Fresno, CACrash1 injured
ENGINE
Rattling noise we’ll driving and when going over 30 mph can lose control
NHTSA complaint #11546214 — an unverified report by a vehicle owner.
Fresno, CACrash1 injured
UNKNOWN OR OTHER
Rattling noise when accelerating
NHTSA complaint #11521872 — an unverified report by a vehicle owner.
Fresno, CACrash1 injured
ELECTRICAL SYSTEM
Rattling noise when accelerating
NHTSA complaint #11521872 — an unverified report by a vehicle owner.
Fresno, CACrash1 injured
ENGINE
Rattling noise when accelerating
NHTSA complaint #11521872 — an unverified report by a vehicle owner.
at 47,000 milesPotomac, MD
FUEL SYSTEM, GASOLINE
The contact owns a 2018 BMW 320I. The contact stated that while the vehicle was parked for a while, upon starting the vehicle, there was an abnormal fuel odor detected. The contact stated that the fuel tank ventilation warning light was illuminated. The vehicle was taken to an independent mechanic who informed the contact that the failure was due to the fuel tank ventilation and power management system. The vehicle was taken to the local dealer where it was diagnosed with a fuel system malfunction. The vehicle was not repaired. The manufacturer was contacted, and the contact was referred to the NHTSA Hotline. The approximate failure mileage was 47,000.
NHTSA complaint #11511146 — an unverified report by a vehicle owner.
at 300 milesLAS Vegas, NV
VEHICLE SPEED CONTROL
VEHICLE HAD 300 MILES ON IT. ALL POWER WENT OUT IN THE VEHICLE INCLUDING THE STEERING GOING STRAIGHT 45MPH WITH MY SMALL CHILD IN THE CAR. ALMOST DIED, BUT WAS ABLE TO CONTROL CAR TO GET IT TO THE SIDE OF THE ROAD ALMOST GETTING HIT HEAD ON. CALLED BMW FROM WITHIN THE CAR AND WENT LATER THAT DAY TO GET A LOANER. I REFUSED TO TAKE BACK CAR DUE TO SAFETY ISSUES. AFTER A WEEK OF THEM "FIXING" IT THEY TOLD ME THAT IT WAS A MAIN CONTROL PANEL FOR THE FUEL PUMP THAT WENT OUT. I DO SEE THROUGH WHEN CHECKING RECALLS FOR 2018 BMWS THAT THERE WAS ONE ISSUED FOR A PUMP, BUT NOT UNTIL SEPTEMBER 2018. THIS HAPPENED TO ME IN MARCH OF 2018, SO IF IT IS THE SAME ISSUE THE RECALL SHOULD BE SHORTENED.
NHTSA complaint #11384147 — an unverified report by a vehicle owner.