NHTSA (USA)Critical
At a glance
What can fail
The engine starter may overheat and catch fire due to wear on an internal component.
What the fix does
Dealers will replace the engine starter at no cost to you.
This page covers 6 recalls, 15 owner complaints and EPA fuel economy for the 2021 BMW 430i.
29 mpg combined
8.1 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.
For 2021 BMW 430i owners, electrical system complaints make up the largest share of reports, with engine issues and seat belt concerns also drawing notable attention. On the electrical side, owners describe a water intrusion issue affecting the engine starter, where moisture contact can lead to corrosion and a potential short circuit, several owners note receiving a notice from BMW advising against driving the vehicle or parking it in an enclosed garage. Some of those owners report the situation dragging on for months without a repair solution available. The engine complaints appear tied to the same underlying starter concern. On the seat belt side, a handful of owners report the driver-side chest strap showing signs of shredding or fraying, with some attributing the wear to the strap contacting the retractor mechanism during normal use.
15
Total Complaints
By System
The 2021 BMW 430i has 6 recalls, the most serious being a fire risk tied to the engine starter relay, which can corrode, overheat, and short circuit.
A separate but related electrical issue also affects the starter assembly and raises the same fire concern, so both issues point to the same area of the car. On the safety equipment side, the side-impact head-thorax airbag in convertible models may not deploy correctly in a crash, and the seatbelt retractor on certain trims may not function as intended, reducing restraint protection in a collision. There is also a software issue where the rearview camera image can be missing or reduced while backing up, leaving the driver with a partial or blank view. Rounding out the list, a separate software fault in the audio module can prevent the seatbelt reminder chime from sounding, meaning the driver may not receive an audible alert to buckle up.
At a glance
What can fail
The engine starter may overheat and catch fire due to wear on an internal component.
What the fix does
Dealers will replace the engine starter at no cost to you.
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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 engine starter relay can corrode, causing it to overheat and short circuit.
What the fix does
Dealers will replace the engine starter at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
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.
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
In side-impact crashes, the head-thorax air bag may fail to deploy properly.
What the fix does
Dealers will update the vehicle's software at no charge.
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.