2017 BMW 340i Recalls
No NHTSA recalls on record for the 2017 BMW 340i. That means NHTSA has no open safety campaign for this vehicle — it does not guarantee the absence of problems. Owners have filed 6 complaints with NHTSA, most often about the unknown or other. Last updated July 5, 2026.
Complaints by component
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal information removed.
“While driving down the interstate I-65 south, my sunroof spontaneously exploded. It sounded like a bomb explosion inside my car and could have caused grave danger to myself. There was nothing dropped on my sunroof as the screen remained intact and closed with no damage. This was an upward and out…”
“My bmw had a pinhole in the radiator caused by driving on the highway and being impacted by a small foreign object. Apparently a foreign object (rock?) impacted the radiator creating a tiny leak. Bmw repaired the vehicle (new radiator) and installed a "rock guard" without discussing this new guard…”
“2017 bmw 340i. Consumer writes in regards to mileage discrepancy. The consumer stated the company offleaseonly was running a scam, where they advertise low mileage cars when in actually the mileage is considerably higher.”
“I was driving when I heard a loud explosion sound. I thought something had hit the car. Upon inspection, I noticed the sunroof had exploded into thousands of pieces. This occurred on june 17, 2019.”
“Driving about 40mph on a straight road, no potholes,on sunny day, temp about 50. Sudden explosion and sunroof exploded outward. Pulled off road, nothing had struck the car. The sunroof glass was completely shattered. There were no injuries”
“Driving about 40mph on a straight road, no potholes,on sunny day, temp about 50. Sudden explosion and sunroof exploded outward. Pulled off road, nothing had struck the car. The sunroof glass was completely shattered. There were no injuries”
Defect investigations
Desiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant…
Desiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant…
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2017 BMW 340i as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.