This page covers 6 recalls and EPA fuel economy for the 2021 BMW M340i.
26 mpg combined
9 L/100km
Compact Cars
Fuel economy data from fueleconomy.gov (EPA / U.S. Dept. of Energy). Annual cost based on 15,000 mi/yr at 55% city driving and current fuel prices. MPG is U.S. gallons; L/100km converted.
The 2021 BMW M340i has 6 recalls, the most serious being three separate occupant restraint issues: a seat belt assembly bolt that may not hold the belt securely, a seat frame that may not be properly welded to its rails, and a seat belt retractor that can fail to function correctly in a crash.
On the electrical side, increased resistance in the 12-volt battery circuit can raise the risk of a fire. The rearview camera on certain vehicles can display a reduced or missing image while reversing, leaving the driver without a full view of what is behind the car. There is also a software issue where the audio module may fail to sound the audible chime reminding the driver to fasten their seat belt.
At a glance
What can fail
The receiver audio module software may fail to produce audible seat belt warning alerts to the driver.
What the fix does
Dealers will update the receiver audio module software at no cost to you.
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Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The seat frame may not be properly welded to the seat rails, which could affect seat stability.
What the fix does
Dealers will replace the seat frame and back rest at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The passenger seat belt retractor may unlock too early before the belt fully retracts, reducing crash protection.
What the fix does
Dealers will inspect and replace the seat belt retractors if needed, at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The bolt that attaches the seat belt assembly to the vehicle frame was not tightened to the correct specification, which could allow the seat belt to become loose.
What the fix does
Dealers will inspect the front seat belt buckle assembly connection and replace it if needed at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
When shifting into Reverse, the rearview camera display may show a partially obscured image or fail to illuminate, reducing rear visibility.
What the fix does
Dealers will inspect and update the rearview camera software as needed at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The connection between the 48-volt battery and starter-generator may not be properly assembled, causing increased electrical resistance at the connection points.
What the fix does
Dealers will inspect the 48-volt battery and starter-generator connection and replace it if necessary, at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
