This page covers 5 recalls, 76 owner complaints and EPA fuel economy for the 2015 BMW 428i.
26–27 mpg combined
8.7–9 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. Ranges reflect the 2 tested variants for this model year.
Electrical system complaints dominate the 2015 BMW 428i complaint set, making up the clear majority of the 76 filed reports. The most consistent pattern owners describe involves the electric coolant pump, specifically, the pump continuing to run after the engine is shut off, or failing outright. Owners report symptoms ranging from a coolant warning light illuminating intermittently while driving to the vehicle failing to start, later diagnosed as coolant pump failure. A smaller cluster of engine-related reports describes overheating accompanied by reduced power and smoke from under the hood, which aligns with the broader coolant system theme. The fuel and propulsion system accounts for a handful of additional complaints, though at low enough volume that no clear symptom pattern emerges from those reports. The recurring thread across the highest-volume complaints is the electric coolant pump either running when it shouldn't or not running when it should.
76
Total Complaints
10
Crash-Related
4
Fire-Related
6
With Injuries
By System
The 2015 BMW 428i has 5 recalls, the most serious involving two separate airbag inflator defects where metal fragments can fly into the cabin or through the door, raising the risk of serious injury or death.
The driver's front airbag inflator can rupture explosively, sending metal shards toward the driver or other occupants. A separate recall covers the side and window airbag inflators, which can also rupture and scatter metal fragments either into the cabin or outward through the door panel. On the electrical side, a wiring connector can develop a short circuit and start a fire. There is also an airbag software concern specific to convertible models: a programming error can cause the driver's front airbag to deploy with incorrect timing in a crash, which may reduce its effectiveness in protecting the driver. Rounding out the recalls, the fuel pump can fail without warning and cause the engine to stall while driving, leaving the vehicle without power in traffic.
At a glance
What can fail
The electrical connector on the water pump may not be properly sealed, allowing water to enter and cause an electrical short circuit.
What the fix does
Dealers will inspect the water pump, replace it and the connector if needed, and install a protective shield.
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Complaints are owner-reported and reflect individual experiences, not confirmed defects. They are distinct from recalls. Data sourced from the national vehicle safety complaint database. See trending complaints →
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The driver's air bag inflator may explode when it deploys due to a manufacturing defect.
What the fix does
BMW will replace the driver's front air bag at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The head air bag inflator may crack at a weld joint, causing gas to leak or the inflator to rupture.
What the fix does
Dealers will replace the head air bags at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The fuel pump contains improperly plated components that can degrade, causing the fuel pump to fail.
What the fix does
The dealer will replace the fuel pump at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
A programming error in the air bag control module may cause the driver's front air bag to deploy at the wrong time during a crash.
What the fix does
Dealers will reprogram the air bag control module with corrected software at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
