2018 BMW 430I Complaints

I am reporting a potential safety defect involving water intrusion into the amplifier location on my BMW F33. According to the dealer's diagnosis, water entered the area containing the amplifier, causing failure of the audio system and the loss of audible safety warnings and alerts. As a result, the vehicle no longer provides audible safety notifications that are intended to warn the driver of potentially hazardous conditions. I believe this condition is caused by a design defect that allows water intrusion and creates an unreasonable safety risk. Research indicates BMW has issued technical service information addressing this condition. I have not taken possession of the vehicle because I am concerned about operating it without functioning audible safety warnings.

The steering wheel airbag has a cut mark, and it feels softer than the rest of the airbag cover. It looks like it may be starting to open.

The car has experienced numerous coolant leaks according to the dealer and independent authorized service shops including: - turbo coolant lines - oil filter housing - auxiliary radiator - coolant pump - heat management module - upper radiator hose - expansion tank hose - various other coolant hoses All of this work has been done starting at 46,000 miles and continuing through the current mileage of 88,000 miles. Complete loss of coolant in system disabled the vehicle putting driver at risk of being stranded, potential permanent damage of motor due to overheating, and loss of use of the vehicle on numerous occasions. Low coolant warning indicator only comes on when the coolant tank is dangerously low. Most leaks have been detected from inspection and diagnostic testing by authorized service shops. The number of coolant leaks has cost over $10,000 in repairs and excessive depreciation of the vehicle causing financial hardship. Full service records are available upon request.

Oil Filter Housing failed causing immediate loss coolant rendering the vehicle inoperative.

2018 430i x drive gran coupe oil filter housing failed. Car started to overheat while driving and the infotainment system indicated that the car is overheating and started to decelerate.

A few months ago, June 18, 2025 my 2018 BMW 430i convertible, which has 57,202 miles on the odometer, alerted me that the passenger side restraint system was malfunctioning. BMW declined to address the issue. Now, I am receiving the same notification for the driver side. Once again, BMW refuses to provide repairs. This poses a significant safety risk, as my airbags could potentially deploy unexpectedly during normal driving, and my seatbelts may fail to secure me in the event of an accident. During my online search, I found a recall for the same issues, the same year and model; however, my VIN was not included in that recall. I am apprehensive about driving my vehicle, as it may be a potential death trap. I believe BMW needs to acknowledge and take responsibility for this serious dangerous defect. My car is currently at the dealership, so I do not have an invoice at this time. Can NHTSA help me with this issue?

The contact owns a 2018 BMW 430I. The contact stated that the vehicle was taken to a local dealer for routine service, and the vehicle was diagnosed and the contact was informed that the water pump was leaking and needed to be replaced. The low coolant level warning light was illuminated. The vehicle was not repaired. The contact referenced NHTSA Campaign Number: 24V608000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM) as a possible cause for the failure. The manufacturer was notified of the failure. The approximate failure mileage was 66,690.

Disconnect coupling on cylinder head broke caused loss of coolant from engine. Overheated my Car damaged the engine and the car did accelerate when I was crossing a highway almost causing a collision

The contact owns a 2018 BMW 430I. The contact stated that while the vehicle was parked, the contact discovered that there was an unknown liquid leaking underneath the vehicle. The coolant warning light was illuminated. The vehicle was taken to a dealer, where it was diagnosed that there was a leak in the water pump and that the water pump needed to be replaced. The contact researched and became aware of NHTSA Campaign Number: 24V608000 (Engine and Engine Cooling; Electrical System); however, the VIN was not included. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 74,000.

The contact owns a 2018 BMW 430I. The contact stated while driving at an undisclosed speed, the vehicle lost motive power. The vehicle was restarted; however, the failure persisted. The vehicle was driven to a local parking lot and then to the residence. The vehicle was later towed to the dealer where it was diagnosed with coolant pump failure. The contact was informed that the coolant pump needed to be replaced. The vehicle was not repaired. In addition, the contact stated that the coolant pump was previously replaced and covered under an unknown recall repair a year prior to the failure. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was unknown.