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What 12 owners told NHTSA about the 2017 BMW 7 Series Hybrid Sedan

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (12)Electrical system (4)Engine (4)Transmission & drivetrain (2)Body & structure (1)Brakes (1)Lights (1)Seat belts (1)Suspension (1)Tires (1)Visibility & wipers (1)

4 of 12 complaints match · Electrical system · clear filters

Aug 23, 2024Electrical systemSeat beltsEngine

Stopping without notice can cause an accident and any of the issues can cause safety issues. What I sent them. I am writing to express my concerns regarding a series of issues with my 2017 BMW 740i and to request your assistance in resolving these matters. I have been working with my local BMW dealership to address several problems, but I believe there may be underlying issues that require further attention. I would appreciate it if you could review my case and consider the points outlined below. Background: Recently, my vehicle was brought in for service to replace the spark plugs and address a few concerns, including the replacement of the fuel tank cover. During this visit, it was discovered that the pressure control valve was faulty and needed replacement. I was not previously informed of any issues with the pressure valve, and I have learned that BMW has issued an extended warranty on this part due to known faults. My understanding is that a faulty pressure valve can cause erratic fuel pressure, leading to premature spark plug failure. Given that my car has only been driven about 8,000 miles annually and is used weekly, not sitting idle for long periods, the spark plugs should still have life left. However, they may have worn prematurely due to the pressure valve issue. Concerns: Pressure Control Valve and Spark Plug Failure: It is highly unusual for three spark plugs to fail simultaneously, as spark plugs generally wear out gradually over time. In most cases, one spark plug would fail before the others if there were a gradual wear issue. The simultaneous failure of three spark plugs suggests a potential underlying issue, such as a problem with the ignition system, electrical issues, or a direct result of a faulty pressure control valve. I request that BMW cover the replacement cost of the spark plugs under the extended warranty for the pressure valve, considering the potential causation between these issues. Hard Jerk When

NHTSA ODI 11610486

Oct 18, 2023Electrical systemEngine

Car started smoking while idling, fire department called. Did not have check engine light on smoking from left tail pipe

NHTSA ODI 11550735

Jul 21, 2023Transmission & drivetrainElectrical system

Failing HV battery cells cause a misreading of the energy level available. When turning left in oncoming traffic the Hybrid launches in EV mode because the battery management system shows plenty of power where there is none. The car will lurch into oncoming traffic and hesitate while trying to start the combustion engine the delay is unexpected and can be enough to cause an accident.

NHTSA ODI 11533727

Jan 16, 2022Electrical systemLights

Instrument panel went blank. No visual indication of how fast I was traveling. Also frontal collision stop working.

NHTSA ODI 11447685

Working with the data? Download all 12 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2017 BMW 7 Series Hybrid Sedan verdict →