2017 BMW 330I engine problems

Filed Nov 21, 2025 · Engine · MI

The cooling system is continually failing prematurely. Parts that should be lifetime are needing to be repaired below 100K miles. I have had to repair the following cooling system related items that should be under recall and are not Oil filter housing Thermostat housing Turbo coolant lines Water neck the cost of repairs is significant and BMW is denying responsibility for the premature failures.

Filed Sep 30, 2025 · Engine · NC

The Oil Filter Housing (OFH), the Coolant/Water Pump, and other plastic lines for the cooling systems are well known to fail with this engine early in their lifetime. My service advisor at BMW said, "these are very common issues for a B46 engine.". The Motor Mounts also are extremely prone to failure due to the use of the Auto Start/Stop feature. This has also been noted by my service advisor at BMW. They commented, "these cars come in often before ever hitting 20k miles and needing replacement. I recommend never using the Auto Start/Stop feature ever again.'

Filed May 22, 2025 · Engine · OH

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.

Filed Apr 21, 2025 · Engine · CA

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 the federal safety agency Campaign Number: Recall 18V755000, October ,24 2018, My car has only 73000 Miles

Filed Apr 15, 2025 · Engine · 73,000 miles · CA

The contact owns a 2017 BMW 330I. The contact stated that while the vehicle was parked, upon inspecting the vehicle, the contact 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 the contact became aware 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 contact stated there was a software update performed on the rearview camera. The manufacturer was notified of the failure but offered no assistance. The contact related the failure to the federal safety agency Campaign Number: 18V755000 (ENGINE AND ENGINE COOLING); however, the VIN was not included in the recall. The contact was referred to the federal safety agency Hotline for assistance. The failure mileage was 73,000.

Filed Apr 2, 2025 · Engine · FL

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 the federal safety agency 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 federal safety agency Hotline for assistance. The failure mileage was unknown.

Filed Mar 10, 2025 · Engine · CO

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.

Filed Feb 18, 2025 · Engine · TN

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.

Filed Dec 6, 2024 · Engine · CA

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?

Filed Oct 28, 2024 · Engine · CO

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.