2021 BMW M340I Recalls, Problems & Safety Rating

6 safety recalls on file

The 2021 BMW M340I has 6 safety recalls on file with NHTSA.

Owners have filed 11 complaints with NHTSA.

The most-reported problem area is Engine (7 reports).

6Recalls
11Owner complaints
0Crashes reported
n/aNHTSA safety rating
Is the repair still open on your M340I?

A recall covers specific vehicles. Your VIN shows whether yours still needs the free repair.

2021 BMW M340I recalls

Seat Belt Chime May Fail to Warn Driver to Buckle Up

Recall 23V584Aug 16, 2023144 vehicles affected

A software fault in the receiver audio module can prevent the audible seat belt warning from sounding properly to remind the driver to fasten their seat belt.

Seat Frame May Not Hold Occupant in a Crash

Recall 23V211Mar 29, 202351 vehicles affected

Some BMW vehicles may have seat frames that were not welded properly to the seat rails.

Passenger seat belt may release early in a crash

Recall 21V554Jul 21, 202121,537 vehicles affected

The passenger seat belt's automatic locking retractor may deactivate early, before the webbing has fully retracted.

Front Seat Belt Bolt May Be Loose, Risking Less Protection

Recall 21V298Apr 28, 202112 vehicles affected

Some 2021 BMW vehicles may have a front seat belt buckle assembly whose bolt, which secures the assembly to the frame, was not tightened to specification during production.

Rearview camera may be blocked or go dark in reverse

Recall 21V096Feb 19, 202113,858 vehicles affected

When the vehicle is shifted into Reverse, part of the rearview camera image can be obscured, or the screen may not turn on.

Loose 48-Volt Battery Connection Can Cause Fire Risk

Recall 20V761Dec 9, 2020812 vehicles affected

The connection between the 48-volt battery and the starter-generator may not have been assembled properly.

Most common 2021 BMW M340I problems

Problem areas named in the 11 complaints owners filed with NHTSA.

Problem areaReports
Engine7
Power Train3
Electrical System2
Service Brakes1
Suspension1
Steering1
Fuel/Propulsion System1

What owners report

2026-07-02, Electrical System
I have been smelling a burning odor in the vehicle for almost a year which the dealership and an independent shop had not been able to diagnose. The car was recently throwing Drivetrain Error codes which prompted a visit to the dealership. They found that the 48v battery and negative cable are burnt and quoted $5680 to replace the battery and cables. After investigating I found that there were recalls for this issue on other BMWs, including the same year and model of my vehicle, but my VIN is not pulling up a recall. The issue is a fire risk and a very expensive repair that should be covered by the manufacturer due to a known defect.
2026-06-29, Engine
The BMW B58TU oil pump thermoplastic component issue that can cause catastrophic failure to the engine. The the gen 1 oil pump was made from plastic and after issues were discovered, they switched to metal oil pumps. However this known issue is something that BMW has not addressed in the models 2019-2021 that came with the inferior oil pump.
2026-05-28, Engine
I am reporting a safety concern involving BMW vehicles equipped with the B58 Technical Update (B58TU) engine, commonly found in model years 2019–2021. These vehicles utilize a variable-displacement engine oil pump containing an internal thermoplastic adjusting component responsible for regulating oil pressure. Field failures are increasingly being reported in which this internal component fractures, resulting in sudden loss or instability of engine oil pressure. The failure frequently occurs during cold-start operation in low ambient temperatures. When the component fails, oil pressure regulation becomes erratic or is lost entirely. In many cases, drivers receive little or no actionable wa
2026-05-18, Electrical System
Here’s a strong version that sounds frustrated but still credible and harder to dismiss: I’ve owned many vehicles over the years, and this BMW has been, without question, the most problematic car I’ve ever had. The list of issues has been absurd for a vehicle in this price range and from a brand that markets itself as a premium luxury manufacturer. The sunroof failed, I’ve had multiple tire blowouts under normal driving conditions, the drive bar/suspension was bent from what should have been a routine road bump, the engine oil housing/component failed, and now I’m dealing with coolant system and drivetrain problems as well. At this point, it feels like one major issue after anot
2026-05-15, Engine
I am reporting a safety concern with BMW vehicles equipped with the B58 Technical Update (B58TU) engine, primarily in 2019–2021 model years. These vehicles use a variable-displacement oil pump containing an internal thermoplastic adjusting component that regulates oil pressure. This plastic part is prone to fracturing, leading to sudden loss or instability of engine oil pressure. Failures most commonly occur during cold starts in low ambient temperatures. When the component breaks, oil pressure regulation fails with little or no warning. Drivers often experience precursor symptoms such as inability to electronically read oil level, erratic oil pressure, or sudden drivetrain warnings. The i

2021 BMW M340I questions

Does the 2021 BMW M340I have any recalls?

Yes. NHTSA lists 6 safety recalls for the 2021 BMW M340I: Seat Belt Chime May Fail to Warn Driver to Buckle Up; Seat Frame May Not Hold Occupant in a Crash; Passenger seat belt may release early in a crash; Front Seat Belt Bolt May Be Loose, Risking Less Protection; Rearview camera may be blocked or go dark in reverse. Recall repairs are normally free at an authorized dealer.

What are the most common problems with the 2021 BMW M340I?

Based on 11 owner complaints filed with NHTSA, the most-reported problem areas are Engine (7), Power Train (3), Electrical System (2).

How do I check if a recall on my 2021 BMW M340I has been fixed?

Enter your 17-character VIN in our VIN recall check. It shows open recalls that have not been repaired on your specific vehicle. Recall repairs are normally free at an authorized dealer.

Other BMW M340I years

Other 2021 BMW models