Engine And Engine Cooling Problems of BMW 330 - part 1

Motor mounts failed on 2021 g20 that only has 52k miles. Vehicle when purchased as cpo had 27k miles and was suppose to be inspected to be certified as cpo. In less than 30k miles from time of purchase it seems these failed early resulting in me driving the vehicle in an unsafe manner until they were scheduled for repair.

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The contact owns a 2018 BMW 330i. The contact stated while driving 35-40 mph, the vehicle shut off unintendedly. The contact stated that there was an oil intake leak and a coolant leak. There were several warning lights illuminated after the failure. The vehicle was towed to an independent mechanic who determined that there was an engine malfunction with the vehicle. The local dealer was contacted and confirmed there was no recall or warranty coverage on the VIN for the failure. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 80,000.

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Car keeps overheating. Water pump, water hose and expansion tank have been replaced several times and the car still overheats.

The issue at hand is the oil filter housings on the b 58 and b 48 motors that BMW manufacturers. These oil filter housings are known to break after four years or 60,000 miles. Can range from the engine overheating to oil leaks. The engine overheating can total the motor and the oil leaking can become a fire hazard. I was fortunate enough to be able to replace mine while BMW replaced another common failure point which is the heat management module. However, this is not as big as an issue as the oil filter, housing, because if the oil leaks, it can become again a fire hazard. There are several forum posts online about this issue I would like for ntha please look at this thank you.

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My BMW has had multiple repairs (3 incidents - 2 times repaired by BMW and 1 time repaired by a national mechanic garage) to the coolant system since I purchased it in 2018. BMW have verified the leaking coolant as well as the independent garage. Currently, the coolant system has another on going issue where it is still leaking and it's still unable to be fixed. This coolant issue has had catastrophic failures at times and more recently it has thrown a major engine overheating warning that has impacted the safety of my wife, kids and I as well as other individuals on the road as I have had to pull over quickly and turn the car off to allow the engine to cool down. I've had to drive the car at a reduce speed and acceleration which has frustrated many drivers causing them to over take me dangerously. Additionally, I've burnt my hand from opening the coolant expansion tank to add coolant on multiple occasions.

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My 330i 2018 BMW has a cracked in the oil housing unit. This is due to BMW putting plastic parts instead of aluminum. After researching this I found thousand of people complaining about the sane thing. The car overheats and sometimes the oil gets mixed into the coolsnt system b causes more damage. This seems to happen on cars with mileage between 60-70 on engines b46, b48 n b58z.

I noticed coolant leaking from under the vehicle. The message to add coolant was displayed. The vehicle was taken to an independent mechanic where the engine was inspected, and was notified of stains of coolant coming from the head gasket. The contact was informed that the head gasket needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but offered no assistance. I believe this is failure is related to NHTSA campaign number: recall 18v755000, October ,24 2018, my car has only 73000 miles.

The contact owns a 2017 BMW 330i. The contact stated while driving at an undisclosed speed, the low coolant warning light illuminated. The vehicle was taken to an independent mechanic, who determined that the vehicle was consuming and excessive amount of coolant. The contact stated that the coolant reservoir was empty after being refilled the previous morning. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA campaign number: 18v755000 (engine and engine cooling); the VIN was included, and the vehicle was already repaired under the recall. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA hotline for assistance. The failure mileage was unknown.

Motor mounts collapse.

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Oil filter housing and or oil cooler failed. Leaking internally and externally. May cause fluid to leak on to hot engine and cause potential fire or short circuit wiring.

Oil filter housing failed and coolant gushes all out which makes the car undrivable and risk of engine overheating and failure.

Unknown, it has problems with stalling and starting up could be issues with the internal drive system that I’ve seen other types of similar models of BMW having these recall issues as well. When starting up after fueling up it over exerts the engine trying to start up. You kind of have to rev it to start it up. And driving it after that it has trouble keeping a solid drive.

I had a coolant leak so I took car in for repair. Mechanic says I have a crack in the oil filter housing. Mechanic told me to check with BMW to see if there was a recall because the oil filter housing was made of plastic and he claimed he heard of recalls for this particular problem. I called BMW and they stated there were no recalls currently on my vehicle, but the plastic housing in BMW's are known to be prone to failure and there were recalls, but not for my vehicle. The warning message initially stated low coolant. Now it states low oil level.

The vehicle gave a warning that the engine coolant was low and to power down before it overheated. Upon taking it to the dealer, it was discovered that the oil housing unit was defective. After doing online research, this is a very common issue with this part. I had a previous vehicle with a similar issue that caused the vehicle to shut down in traffic from overheating.

I started my vicheal up and turned the heater on on my 330i 2020i BMW I sat there for about 15 mins and noticed a smoke smell I stepped out my car and realized my car was on fire! no sensors went off saying car had any issues regarding coolant or engine oil or anything so I have zero idea what started my car fire police and fire rescue was there fire investigation is making a report an insurance representative will be inspecting from what I see online BMW was been having issues with 3 series randomly catching fire either by faulty water pump? by a short circuit? the vicheal is completely totaled my safety was at risk if I wouldve started driving and didn't notice it would've been way wrose than what happened unsure where insurance will be taking the vicheal to.

The contact owns a 2006 BMW 33i. The contact stated that while driving at 75 mph, the contact noticed smoke coming into the interior of the vehicle. No warning lights were illuminated. In addition, the contact noticed fire coming from underneath the hood. The contact exited the vehicle. The contact stated he had to leave the vehicle abandoned for about a month. The contact stated the vehicle had been towed to an impound lot. The vehicle was then towed to the contact’s residence. The contact stated that a certified independent mechanic diagnosed the failure as thermal damage due to the NHTSA recalls. The vehicle was then towed to the dealer, where it was diagnosed with an oil leak that caused the fire. The contact was informed of a recall NHTSA campaign number: 17v683000 (engine and engine cooling) and NHTSA campaign number: 19v273000 (engine and engine cooling) however the VIN was not included. The manufacturer was made aware of the failure, and a case was filed. The contact was advised to have the vehicle towed to the dealer for further investigation. The contact stated that the manufacturer initiated an investigation, and after the investigation was performed, the case was closed. The failure mileage was approximately 101,000.

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Error in vehicle computer software causing check engine light to show error in active grill position sensor, could lead to engine not properly cooling. Manufacturer error.

On 12/03/2024, while traveling at approximately 35mph, the "top off coolant" light came on. After traveling for approximately 10 more minutes, in route to get coolant, a warning message came on the screen advising to drive cautiously to prevent engine scorching. The vehicle then began to slightly lose power while traveling on a busy road. The vehicle was then shut down and towed to BMW dealership. During the tow, it was discovered that coolant was leaking from the center area of the engine block. The manufacturers dealership service rep advised that the technicians discovered that the oil filter housing needed to be replaced. They also found that the coolant pump also needed to be replaced. The rep advised that the coolant seal on the oil filter housing had worn down and caused the coolant leak. He also advised that the coolant pump needed to be replaced, as it was also leaking. It was later discovered because the valve that the pressure propelled, hot coolant flows through in the oil filter housing is made of plastic, it often wears down and coolant leaks out heavily. The water pump is also effected by the part manufacturing issue. In addition to receiving a $4,270. 42 invoice for repairs today, we just recently purchased the $199. 00 BMW vehicle check service from the dealership on 9/23/2024. At that time, we were advised there were no issues with the vehicle. We have sense learned that there have been multiple recalls on various BMW models for this exact same issue. However, the VIN on my vehicle has not yet been identified for recall. Had this issue gone on for mere moments more, the engine could have caught fire, and or, a catastrophic crash could have ensued, effecting any driver on the road.

Engine coolant leaking and took it to BMW dealer. Was advised that the issue was a oil filter housing gasket, heating control module and hose. Was advised by the dealer that it was a common issue and happens all the time.

The vehicle had a recall on the engine coolant valve line which was taken care of by BMW dealership on November 1, 2024. In less than a month later, an issue has been noted of coolant leak which caused the engine to overheat causing a safety issue on the road while driving my kids to school. The service manager advised that the issue is not part of the open recall that was already done on November 1st. How can a recall for the same concern of coolant leak and engine over heat cover only one hose where the issue could be related to another hose connection?.

This is my second BMW 3 series. Both of my BMW 3 series have flaws in cooling system. Within 7-year of purchase, it has more than 7 leaking issues. In 2019, it has water pump issue in 2020 it has evaporative emissions vent purge valve issue in 2022, it has cooling system hoses leaks in 2023, it has cylinder head leak in 2024, it has coolant leaks, oil filter leaks, and front struts leaks. All these are related to a failed cooling system and overheating engine.

The contact owns a 2020 BMW 330i. The contact stated that while driving at an undisclosed speed, the vehicle shuddered with an abnormal sound coming from underneath the vehicle. The vehicle was taken to a local independent mechanic where it was diagnosed that the bearing and motor mount needed to be replaced. Upon further investigation, the contact stated that the failure was related to NHTSA campaign number: 19v732000 (engine); however, the VIN was not included. The local dealer was contacted, but the vehicle was not diagnosed or repaired because the VIN not included in the recall. The manufacturer was made aware of the failure. The failure mileage was approximately 80,000.

The oil filter housing on my BMW 330i failed randomly while driving causing my vehicle to be depleted off coolant within seconds. If you want to inspect the part you will have to reach out to BMW of columbus for documentation and I can provide the service records for repair. This caused my vehicle to have to be brought to an immediate halt to not cause overheating or engine destroying failure at a time where service/repair isn’t available. There were no warning lights or leaks prior to the vehicle malfunctioning all at once. I ubered to get coolant and once filling the reservoir the coolant immediately leaked out resulting in me needing a tow to the dealership. This problem has been reproduced with many dealers as there’s numerous of report of this online and I believe the dealer has inspected this part but is refusing to replace or recall this part under any type of program or create any type of solution to make this not happen again. There wasn’t any small leaks or warning lights shown before this issue spawned all at once then showing the low coolant light.

Persistent low coolant warning issue, coolant leak was discovered to be coming from oil filter housing. This is a $3000 repair on something that should last at least as long as the engine. If there are others with this problem, then maybe a recall is due. Dealer is repairing now at my expense.

BMW b48 engine. Coolant started leaking and the engine overheated. Unbeknownst to me caus the bottom of the car is covered. I had a mechanic look at it. Found the leak coming from the "oil filter housing unit". When he removed it it was broken at one of the 6 ports inside with the pieces missing presumably fell into the interior of the engine. BMW manufactured these units out of a composite material and not aluminum I assume to save costs and weight. This composite material has failed in many of their engines including the Mini cooper. When I looked on line googling it I was shocked at how wide spread it was. It's a costly repair about 2000-2500 for parts and labor. This composite material is also used in their failing water pumps all the failing coolant hose connectors and more I believe.

Multiple codes came on right after I had gotten my thermostat and my water pump fixed. However it ended up being that there was more leaks throughout the rest of the car. The car has currently cost me $3400 to fix and it’s still not fixed because nobody can figure out where the actual leak is coming from. The coolant is leaking and nobody can figure out where, it’s been having jerking issues since it started leaking and I read on other BMW’s that the coolant leaks into the head gasket, causing the engine to blow.

At around 65k miles multiple plastic engine coolant connectors and hoses crack and fail. 5 locations at the same time! coolant pump leaks. I went to an independent repair shop for a second opinion and repairs for $2,400 so far. Cheaper than the BMW service department. There was a recall done 2 years ago for 1 hose I believe. The entire cooling system should be recalled. We could be stranded somewhere in a bad situation and the engine could be destroyed if overheated. Awful and bad design.

Coolant leak from oil filter housing caused a major repair. The car has about 109,000 miles. Parked it after work on a Thursday went to drive it to a family dinner Friday, I turned the car on and immediately get a low coolant light. I drove 2 miles down the road, suddenly the coolant started pouring out and the coolant light comes on again, I return home and have to take my girlfriends car. On the invoice it states, “entire oil filter housing part was replaced”, the plastic used to seal in the coolant had either been destroyed or broken off, not a gasket but a piece from the oil filter housing part. The dealer charged $4500 for the repairs, which they said were “optional” but the engine couldn’t hold coolant. This item is not on the recommended service list, as it’s not an item listed for “wear and tear” however the b48/58 engines are so new that finding enough over 100k miles is not easy to replicate the issue, although message boards have recently discovered this issue occurring with more regularity. Please investigate and help consumers who potentially could be left stranded by this defect.

My oil filter housing failed at about 53,000 miles. While driving to work I got a low coolant warning and pulled over to see coolant dumping out of my car. The low coolant warning only comes on when the expansion tank is almost completely empty which can lead to oil and coolant mixing and overheating which will lead to premature engine damage without any early warning signs. I’ve read through forums and everyone on there has their oil filter housing fail at the same time, (around 50-60k miles). This is a huge issue in the community and BMW wants to charge almost 3,500 to replace it with their “revised part”. The housing has been revised 3 times now and so the manufacturer should replace these failed designs with the new revised ones. There’s already been a recall on the b48 engine for the plastic cooling line that leads into the head of the engine and it looks like the oil filter housing is the next biggest common failure. I tried to upload a screenshot from the service center at BMW with the quote and failure but it’s not working on my mobile.

In November of 2023 I was driving my vehicle on the highway when my vehicle's control panel notified me the engine was over heating and I needed to stop driving the vehicle immediately. All the engine coolant had leaked from my vehicle. I had to pull over on the highway and have my vehicle towed. My mechanic identified the problem as the coolant vent line and made the repair. Total cost was $2,052. 16 including the tow. A few months later a message from BMW came up on my vehicle's computer display saying there was an "important recall or campaign", a service action for the exact repair I paid $2,052. 16. They now refuse to reimburse me because it is not labeled a "recall". This issue is widespread and needs to be labeled a recall for consumers. A known defect since 2022 that I was never notified prior to the incident and now they refuse to reimburse me for a know defect in their product. I believe this violates my rights under federal consumer protection laws. Please help the consumers and force BMW to label this safety issue a recall and stop hiding behind their euphemisms.

The plastic oil filter housing assembly developed a crack as we all should know heat and plastic do not do well with each other. Cause my coolant at first to slowly leaked and never gave me a warning of low coolant. Driving 60+ mph then all of a sudden cars goes into limp mode so the person behind me lucky swerved to the left to avoid hitting me. So filled up coolant and same thing happens again about a week later. No visible leaks no dashboard warning of low coolant levels. So I fill up and go. Mind you my engine is already overheating when it tells me on dashboard while going into limp mode at the same time so continuously overheating engine seems to cause more problems water pumps starts leaking and pipes start developing holes. Safety comes into play while driving down a highway when car goes into limp mode causing the driving that’s not paying attention ram into you. Quite a few safety concerns. Never had a chance or opportunity to pull over to self diagnose, car goes into limp mode with no warning. There are several thousands of this reporting the same with oil filter housing assembly. As I am writing this my mechanic is in the process of taking the part off and replacing it with a metal one. This first happened around thanksgiving 2023 and progressively got worse with each week.

Coolant leak caused a major repair. The car has about 90,000 miles. Suddenly the coolant started pouring out. As you see in the attached invoice, entire heat exchanger, water pump, and other several parts were to be replaced. The dealer first estimated the repairs at $5,400 and they agreed to do it at warranty price rates. However, we believe other BMW models have had similar recalls for coolant leak and suspect same on this model too. Please investigate and help consumers who are ending up paying exorbitant amounts to service shops. BMW may be hiding this problem from ntsb to avoid recalls by agreeing to repair at vehicle warranty rates.

Both the upper and lower active grille shutters for most BMW models in the 5 model years prior to mine had extended service warranties due to frequent failures of the part. It appears that the design was not improved with my model year and yet my vehicle is not part of the extended warranty. My vehicle is only 4 years old and both the upper and lower air flap control motors have failed. The motors are not sold individually, but are sold as a part of the entire shutter assembly which has a part cost of $250 - $350 each with comparable installation costs. The lower shutter assembly requires the removal of the entire bumper. Why is the extended service warranty not applicable to newer models?.

The contact owns a 2006 BMW 330i. The contact received notification of NHTSA campaign number: 22v119000 (engine and engine cooling) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that while driving at an undisclosed speed, a burning odor was detected. The contact parked the vehicle; however, the vehicle failed to restart. Prior to the failure, the dealer was made aware of the issue but confirmed that parts were not yet available and scheduled an appointment for April. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 149,000. Parts distribution disconnect.

Out of nowhere with only 1 day warning car requested coolant refill. After refill within 10 minutes car engine ran hot and completely stopped on the expressway. I’ve read hundreds of reviews online and youtube where this exact same thing has happened to others with this same car.