This page covers 2 recalls and EPA fuel economy for the 2023 BMW 840i.
24 mpg combined
9.8 L/100km
Subcompact 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 2023 BMW 840i has two recalls, the more serious being a starter motor that can overheat after repeated start attempts and ignite nearby materials in the engine compartment, creating a fire risk.
A software recall also affects this vehicle: a bug can allow the windows and sunroof to close on their own without the key present, which can injure anyone inside the vehicle at the time.
At a glance
What can fail
The starter motor may overheat due to electrical overload after repeated starting attempts.
What the fix does
The engine starter will be replaced at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
We may earn a commission for purchases made through these links.
At a glance
What can fail
After removing the digital key, the vehicle's control software may still allow the power windows and sunroof to close, violating safety standards for power-operated windows.
What the fix does
Dealers will update the Electronic Control Unit software at no cost. Digital key access via cellular and Wi-Fi will be disabled until the update is installed.
Summarized — see the official notice for exact wording, dates, and contacts.
