Problems · by component

2015 BMW 3 Series engine problems

42 owner complaints to NHTSA about the 2015 BMW 3 Series cite engine, 21% of all 196 complaints for this model year.

Complaints
42
21% of all complaints
Crashes
0
Reported by owners
Fires
5
Reported by owners
Injuries
0
Reported by owners
01 —Owner reports

What owners say about the engine

Verbatim from NHTSA complaints, newest first
“The engine intake tract, PCV infrastructure, and the main lower engine wiring harness loom failed due to improper reassembly during Federal Safety Recall 24V-608. The technician left the main intake coupler completely loose and spinning freely by hand, and left the MAF sensor crooked. This introduced a massive unmetered air leak and severe vacuum leaks. Simultaneously, the technician over-tensioned, pinched, or damaged the Cylinder 2 wiring loom components. The vehicle is currently parked dead and untouched at my residence, and it is 100% available for immediate federal or corporate inspection.The unsealed intake tract and damaged wiring harness caused the engine to run dangerously lean at highway speeds. This resulted in sudden, violent engine shuttering, rapid deceleration, severe mechanical engine knocking, and a terminal Cylinder 2 misfire. This component failure caused an immediate loss of vehicle propulsion on a high-speed public highway, creating an extreme risk of a high-speed collision and leaving the vehicle completely disabled. The issue has not yet been physically inspected by a third party because the vehicle is unsafe to drive. I went to the…”
Owner complaint to NHTSAFiled Jul 17, 2026Electrical system, Engine, Fuel/propulsion systemODI 11751142
“On [XXX], my 2015 BMW 328i xDrive (VIN: [XXX] , N20 engine, 124,250 miles) suffered a catastrophic engine failure while in operation. Component/System Failed: The timing chain guides and oil pump drive chain module failed. The plastic timing chain guide broke apart inside the engine. The vehicle was salvaged and is no longer available for inspection. Safety Risk: The oil pressure warning illuminated suddenly while driving at highway speed with no prior warning. Sudden loss of oil pressure and engine power while operating a vehicle at speed creates a significant risk of accident, loss of vehicle control, and injury to the driver and others on the road. Confirmed by Service Center: BMW of Springfield, New Jersey performed a formal diagnostic confirming timing chain guide failure and oil pump drive chain failure. A BMW mechanic performed a scope inspection on April 3, 2026 visually confirming the broken plastic timing chain guide. Repair estimate: 7,191.42. Inspected by Others: The vehicle was inspected solely by BMW of Springfield. No police, insurance, or manufacturer representatives conducted a separate inspection. The failure mode is consistent with the defect…”
Owner complaint to NHTSAFiled Jun 1, 2026EngineODI 11741411
“I Was In My Vehicle Parked Up On January 1st 2026 And The Vehicle Caught On Fire While I Was Inside Of It,The Fire Started From The Right Side Of The Car And Flamed Up Everything,The Car Had A Check Engine Light On And A Lightning System Issue Was Popping Up On The Dash Right Before This Situation Accord I Did Research And Found That The Cause Of The Fire Is Related To NHTSA Recall 24V-608 (Water Pump/Connector Fire Risk).”
Owner complaint to NHTSAFiled May 14, 2026Exterior lighting, Engine, Fuel/propulsion systemFire reportedODI 11737824
“On November 17, 2025, my 2015 BMW 328i (VIN: [XXX] ) caught fire while parked, locked, and turned off inside my enclosed residential garage in Irvine, California. The vehicle had been parked for approximately 90 minutes prior to the incident. No flammable materials were stored in or around the vehicle. Responding police and fire personnel identified the vehicle itself as the source of the fire, with ignition originating in the engine bay. The building’s fire sprinkler system activated, and residents were evacuated due to smoke and fire conditions. No injuries occurred, but the incident posed a serious risk to life and property due to the residential setting. The vehicle was a total loss. While the exact technical cause of ignition could not be determined at the scene, first responders confirmed that the fire originated within the vehicle’s engine compartment. BMW of North America was notified of the incident and represented that an inspection would be coordinated. I remained in contact with all involved parties and relied on BMW’s stated intent to contact the tow facility directly to arrange inspection. Despite this, BMW did not make contact with the tow…”
Owner complaint to NHTSAFiled Jan 16, 2026Electrical system, Engine, Fuel/propulsion systemFire reportedODI 11711412
“My 2015 BMW 328i xDrive (VIN [XXX] ) experienced an engine-compartment fire that began shortly after coolant sprayed from the front of the vehicle. This incident occurred before BMW’s official recall announcement for NHTSA Campaign 24V-608 / BMW 24V-608:474 (Safety: Engine Coolant Pump Electrical Connector). The fire originated near the coolant pump area, consistent with the recall’s described defect involving electrical shorting and overheating at the pump connector. The vehicle was declared a total loss by my insurance company. I believe this event was caused by the same defect identified in the recall and request that this incident be investigated and documented under campaign 24V-608. Supporting photos and insurance documentation are available upon request.”
Owner complaint to NHTSAFiled Oct 25, 2025Power train, Electrical system, EngineFire reportedODI 11695569
“Engine coolant pump recall (August 2024) with no remedy to this day. Has caused major smoking issues from exhaust and engine. The turbocharger has been affected and deemed inoperable. Fluid leaks from chassis and engine bay. The car is inoperable. Prior to being unable to drive I was experiencing transmission issues, went for a few repairs but would experience the car coming to a complete stop on its own at highway speeds. Experienced this on the bridge, being left stuck and almost causing a wreck. Made the bridge very unsafe for others. I had a “drive train malfunction” warning& check engine light that I thought was fixed with multiple mechanic trips but problems have only gotten worse. No inspections have been done in regards to the recall. The car has sat unable to drive for 2 full months now.”
Owner complaint to NHTSAFiled Jun 21, 2025Power train, Engine, Fuel/propulsion systemODI 11668307

Showing 6 of 42 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 3, 2026NHTSA vehicle page

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.