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.
2018 BMW 430I engine problems
22 complaints (61% of all complaints for this car). Typical mileage when it fails: 66,690. 2 crashes reported.
- owner complaints
- 22
- of this car's complaints
- 61%
- typical mileage
- 66,690
- crashes
- 2
- recalls
- 0
Which part fails
- Cooling system: pump1
At what mileage
Complaints by mileage at the time of the problem.
BMW 430I engine problems in other years
Specific symptoms reported on the 2018 BMW 430I engine
Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.
Related recalls
No recalls on record for this model year.
What 2018 BMW 430I owners say
Most recent owner complaints, unedited.
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.
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 the federal safety agency 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 the federal safety agency 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 federal safety agency 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 federal safety agency Hotline to report the failure. The failure mileage was unknown.
I pulled out onto Southside Blvd. My brakes failed, my driver’s front of the car hit a Waste Management garbage truck right back tire and cut the sidewall of the tire. The engine was racing, the truck pulled off the road, and I had sudden unintended acceleration. I immediately turned into a strip center and my car was racing through the strip center, the brakes were not working, the car controls were not working, and I turned the ignition switch off and the car stopped. The car had to be towed. Presently my insurance company has issued an estimate to repair the cosmetic issues, but not the mechanical issues.
The contact owns a 2018 BMW 430I. The contact stated while driving at an undisclosed speed, the engine started overheating with the low coolant warning light illuminated. The contact parked and left the vehicle at a local dealer. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and confirmed that the VIN was not included in SIB: 17 01 21 (Service Action: Replace the Coolant Vent Line on the Cylinder Head) and referred the contact to the federal safety agency Hotline for assistance. The approximate failure mileage was 80,769.
Front driver seat , keep sliding when u hit on breaks on the left legs where seat controls are located the balance between right thigh and left thigh is not well measured so becomes increasingly uncomfortable when thicker person driving the car, could cause an accident and risky, Engine problem - so many coolant leak which has cost me over 6000 dollars to repair and yet Still leaking, when I switch to spot mode this coolant overheat and thrn Another leaking, switch to sports plus more coolant leak Second the seat belt holder, a system is design to hand over the seat belt when doors close the that holder keep missing the seat belt or couldn’t drag it to you I’ve seen this in many of the bmw Another incident I notice when you reverse there’s crack or skip between the tires u could feel it like car is shaking reversing especially when wheel turn all the to the end
Questions about the 2018 BMW 430I engine
Does the 2018 BMW 430I have engine problems?
Owners have filed 22 complaints about the engine of the 2018 BMW 430I, 61% of all its complaints, more than any other problem.
At what mileage do 2018 BMW 430I engine problems start?
The typical (median) mileage in owner complaints is 66,690 miles.
Was there a recall on the 2018 BMW 430I engine?
There is no recall for this problem on this model year.
What year does the BMW 430I have bad engine?
The BMW 430I model years with the most engine complaints are 2018 (22 complaints), 2017 (13 complaints) and 2019 (11 complaints).
Other 2018 BMW 430I problems
Electrical 5Seat belts 4Seats 3Airbags 2Brakes 2Driver assistance 2Fuel system 2Transmission 2Acceleration 1Tires 1Visibility 1
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