2020 Bmw M340i Safety Report
2020 BMW M340i Safety and Reliability Concerns
Safety Decision Cockpit for the 2020 Bmw M340i
This page is the hub for deciding what to inspect next on the 2020 Bmw M340i. It connects recall campaigns, owner complaint patterns, service bulletins, sibling model years, component issue hubs, and the model buying guide so a shopper or owner can move from a single report into the wider safety graph.
| Signal | Value | What to inspect next |
|---|---|---|
| Recall burden | High (10) | Review campaign numbers, affected components, and dealer remedies below. |
| Owner complaints | Moderate (42) | Scan complaint narratives for recurring symptoms, mileage, crashes, fires, injuries, and dates. |
| Crash and fire reports | 0 | Treat any crash, fire, injury, or fatality-linked pattern as a priority pre-purchase inspection item. |
| Primary component hub | Engine | Compare engine issues across vehicles. |
| Cleaner nearby model year | 2022 | Compare against the 2022 Bmw M340i with 4 complaints and 1 recalls. |
| Riskier nearby model year | 2021 | Check the 2021 Bmw M340i before buying across this generation. |
Bmw M340i Year-by-Year Comparison
The safest purchase decision usually comes from comparing neighboring model years, not reading a single page in isolation. The table below uses only validated Bmw M340i years already present in the cleaned NHTSA dataset, so each comparison links to a real vehicle safety report rather than a generated combination.
| Model Year | Complaints | Recalls | Use case |
|---|---|---|---|
| 2021 Bmw M340i | 6 | 6 | Compare as a potentially cleaner alternative. |
| 2022 Bmw M340i | 4 | 1 | Compare as a potentially cleaner alternative. |
2020 Bmw M340i Complaint Theme Map
Complaint counts become more useful when they are grouped into inspection themes. For the 2020 Bmw M340i, these are the component areas with the clearest NHTSA complaint signals. Use each link to jump from this single vehicle into broader component hubs and make-specific issue pages.
Engine
19 owner complaints mention this component in the current safety profile.
All Engine issues Bmw onlyUnknown Or Other,Engine
4 owner complaints mention this component in the current safety profile.
All Unknown Or Other,Engine issues Bmw onlyEngine And Engine Cooling
3 owner complaints mention this component in the current safety profile.
All Engine And Engine Cooling issues Bmw onlyUnknown Or Other
3 owner complaints mention this component in the current safety profile.
All Unknown Or Other issues Bmw onlyElectrical System,Engine
2 owner complaints mention this component in the current safety profile.
All Electrical System,Engine issues Bmw onlyFuel/Propulsion System
2 owner complaints mention this component in the current safety profile.
All Fuel/Propulsion System issues Bmw onlyAI Safety Analysis for the 2020 Bmw M340i
Reliability Score
The 2020 Bmw M340i receives a reliability score of 85 out of 100 based on analysis of NHTSA complaint data, recall history, crash reports, and safety ratings. This indicates above-average reliability relative to comparable vehicles.
Known Issues for the 2020 Bmw M340i
The following issues have been identified from NHTSA complaint data and owner reports for the 2020 Bmw M340i:
| Issue | Severity | Frequency | Typical Mileage |
|---|---|---|---|
| Engine Oil Pump Failure The oil pump in the B58 engine, common in 2019-2022 models, is made of plastic and can fail, leading to catastrophic engine failure. |
High | Rare | 30k-60k miles |
| Electrical System Issues Recalled due to issues with the starter assembly, which can cause starting problems and require a recall fix. |
Medium | Common | 30k-60k miles |
| Seat And Seat Belt Recalls Recalls have been issued for seat and seat belt issues, affecting various models including the M340i. |
Medium | Common | 30k-60k miles |
| Back Over Prevention System Recalled due to issues with the back over prevention system, specifically the camera, affecting certain models. |
Low | Rare | 30k-60k miles |
Common Problems Reported by Owners
Based on NHTSA complaint data, the following components account for the majority of reported issues with the 2020 Bmw M340i:
Engine issues, including oil pressure warnings and potential catastrophic failure, are a common problem.
Issues with the electrical system, particularly the starter assembly, are a common problem.
Recalls for seat and seat belt issues are a common problem.
Recalls for the back over prevention system are a less common problem.
Recall Details for the 2020 Bmw M340i
The following 10 recalls have been issued for the 2020 Bmw M340i by NHTSA:
Summary: BMW of North America, LLC is recalling certain 2019-2020 X5, X7, 2020 3 Series Sedan, X6, 2020-2021 7 Series Sedan, 2020 8 Series Convertible, 8 Series Coupe, and 2020 8 Series Gran Coupe vehicles. Please see the recall report for the complete list of models. In the event the starter motor fails, repeated attempts to start the vehicle can cause the starter motor to overheat from an electrical overload.
Consequence: A starter motor that overheats can ignite nearby combustible material in the engine compartment, increasing the risk of a fire.
Remedy: Dealers will update the vehicle software, free of charge. Owner notification letters were mailed September 27, 2024. Owners may contact BMW customer service at 1-800-525-7417.
Summary: BMW of North America, LLC (BMW) is recalling certain 2019-2022 330i, 330i xDrive, M340i, 2022 430i Coupe, 2021-2022 430i, M440i Convertible, and 2020-2022 228i xDrive Gran Coupe vehicles. The receiver audio module control unit software may fail to properly generate audible seat belt warnings to the driver to fasten their seat belt. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
Consequence: An audible chime that does not properly alert the driver to fasten their seat belt increases the risk of injury in a crash.
Remedy: Dealers will update the receiver audio module software, free of charge. Owner notification letters were mailed October 12, 2023. Owners may contact BMW customer service at 1-800-525-7417.
Summary: BMW of North America, LLC (BMW) is recalling certain 2019-2021 330i, 330i xDrive, M340i xDrive, 2020-2021 X3 sDrive30i, X3 xDrive30i, X3 M40i, X3M, 2021 X3 xDrive30e, X4 xDrive30i, and X4M vehicles. The seat frame may not have been welded properly to the seat rails.
Consequence: An improperly welded seat frame may not properly restrain the occupant during a crash, increasing the risk of injury.
Remedy: Dealers will replace the seat frame and back rest, free of charge. Owner notification letters were mailed May 22, 2023. Owners may contact BMW customer service at 1-800-525-7417.
Summary: BMW of North America, LLC (BMW) is recalling certain 2020 M340i, M340i xDrive, 540i, 540i xDrive, X3 M40i, 2020-2021 X4 M40i, 745Le xDrive, 2019-2021 Z4 M40i, and 2020-2021 Toyota Supra vehicles. During engine start, the engine management software may cause loss of braking assist. Full mechanical braking (without assist) remains available.
Consequence: Loss of braking assist can increase the risk of a crash.
Remedy: Dealers will update the engine management software, free of charge. Owner notification letters were mailed on September 17, 2021. Owners may contact BMW customer service at 1-800-525-7417.
Summary: BMW of North America, LLC (BMW) is recalling certain 2019-2021 X3 sDrive30i, X3 xDrive30i, X3 M40i, X3M, X4 xDrive30i, X4 M40i, M550i, X4M, X5 sDrive40i, X5 xDrive40i, X5 xDrive50i, X5M, X5 M50i, X7 xDrive40i, X7 xDrive50i, X7 M50i, Alpina XB7, 330i, 330i xDrive, M340i, M340i xDrive, and 8 Series Coupe, Convertible and Grand Coupe, 840i, 840i xDrive, M850i xDrive, M8, 2020-2021 530e, 530e xDrive, 330e, 330e xDrive, 745Le, 745Le xDrive, X5 xDrive45e, X3 xDrive30e, X6 sDrive40i, X6 xDrive40i, X6 x...
Consequence: If the driver relies on only the rearview camera image, the missing or reduced rearview image view can increase the risk of a crash or injury.
Remedy: BMW will notify owners, and dealers will inspect the rearview camera software and update it if necessary, free of charge. The recall began April 16, 2021. Owners may contact BMW customer service at 1-800-525-7417.
Summary: BMW of North America, LLC (BMW) is recalling certain 2019 Z4 sDrive30i, 2019-2020 330i xDrive, M340i and M340i xDrive, 2020 X3M and X4M, and Toyota Supra vehicles. In certain driving conditions, such as high temperatures and rough road surfaces, a steering gear tie rod may become damaged, possibly resulting in a fractured tie rod.
Consequence: A damaged or fractured tie rod may affect vehicle handling and control, increasing the risk of a crash.
Remedy: BMW and Toyota will notify owners, and dealers will replace the steering gear tie rods, free of charge. The recall began August 14, 2020. Owners may contact BMW customer service at 1-800-525-7417 or Toyota customer service at 1-888-270-9371.
Summary: BMW of North America, LLC (BMW) is recalling certain 2020 X3 xDrive30e, X4 xDrive30i, X4 M40i, X4M, 330i, 330i xDrive, M340i, 840i Gran Coupe, 840i xDrive Gran Coupe, M850i xDrive Gran Coupe, M8 Gran Coupe, X3 sDrive30i, X3 xDrive30i, X3 M40i, X3M, and 840i xDrive Convertible vehicles. The sensors in the front seat belt buckles may inaccurately detect a belted occupant as unbelted, possibly causing the air bag and seat belt pretensioners to deploy improperly in the event of a crash.
Consequence: If the air bag and/or seat belt pretensioners deploy improperly in the event of a crash, there is an increased risk of injury to the driver and front passenger.
Remedy: BMW will notify owners, and dealers will inspect and replace the front seat belt buckles, as necessary, free of charge. The recall began May 18, 2020. Owners may contact BMW customer service at 1-800-525-7417.
Summary: BMW of North America, LLC (BMW) is recalling certain 2020 330i, 330i xDrive and M340i vehicles. The interior trunk release cable may have been improperly installed, preventing the opening of the trunk from the inside. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 401, "Internal Trunk Release."
Consequence: If a person were inside the trunk compartment, they may not be able to get out, increasing their risk of injury.
Remedy: BMW will notify owners, and dealers will inspect the interior trunk release cable and properly install the cable, as necessary, free of charge. The recall began December 13, 2019. Owners may contact BMW customer service at 1-800-525-7417.
Summary: BMW of North America, LLC (BMW) is recalling certain 2018 540d, 2018-2020 530i, 530i xDrive, 540i, 540i xDrive, M550i xDrive, M5, 530e, 530e xDrive, X3 sDrive, X3 xDrive, X3 M40i, X3 M, and 2019-2020 X4 xDrive, X4 M40i, X4 M, X7 xDrive, X7 M50i, 740Li, 740Li xDrive, 750Li, 750Li xDrive, 8 Series Convertible and Coupe 840i, 840i xDrive, M850i xDrive, X5 sDrive, X5 xDrive, X5 M50i, X6 xDrive, X6 M50i, 330i, 330i xDrive, M340i, M340i xDrive, Z4 sDrive, Z4 M40i, 740Le xDrive and 745Le xDrive, 2018-2...
Consequence: The lack of an image in the back-up camera display increases the risk of a crash.
Remedy: BMW will notify owners, and dealers will update the back-up camera software, free of charge. The recall began November 8, 2019. Owners may contact BMW customer service at 1-800-525-7417 or Rolls-Royce at 1-877-877-3735. Toyota owners may contact Toyota customer service at 1-888-270-9371.
Summary: BMW of North America, LLC (BMW) is recalling one 2020 M340i and one M340i xDrive vehicle. Due to improper welding, the rear center headrest may fold in the event of a rear impact crash.
Consequence: If the headrest folds down in a crash, there would be an increased risk of injury.
Remedy: BMW will notify owners, and dealers will replace the rear center headrest, free of charge. The recall began August 28, 2019. Owners may contact BMW customer service at 1-800-525-7417.
NHTSA Complaint Summaries for the 2020 Bmw M340i
Below are complaint narratives filed by owners of the 2020 Bmw M340i with the National Highway Traffic Safety Administration.
Engine failed suddenly while driving on a highway. While driving at highway speed, warning lights and messages appeared indicating oil pressure is low and to turn off the engine immediately. The vehicle was towed to the shop where it was discovered that the oil pump, which was made out of plastic, had suffered a catastrophic failure. Was told if the engine continued running any longer it would hav...
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 fractur...
EXHIBITING SIGNS OF NOT BEING ABLE TO READ OIL LEVELS WHICH IS A POTENTIAL SIGN OF OIL PUMP FAILURE DUE TO PLASTIC INTERNAL COMPONENTS THAT HAS OCCURED IN 2020 MODELS.
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 fractur...
Oil pump is made of plastic causing it to fail after a certain time and can lead to a total engine loss if not swapped out with BMW’s updated oil pump. They are aware of the issue but neglecting to handle the problem.
Oil pump in B58 BMW engines 2019-2022 has been a major safety concern that results in catastrophic failure while driving the vehicle. All because of BMW using a plastic component and quietly changed it, meanwhile hundreds of people had a major oil leak and engine seizures on hwy and $5k+ repairs.
Oil Pump Failed its common issue on them but no recall
The ignition start is not clean and delayed. There is already a recall 25V-644. There is "No remedy available" for this model per inquiry with local BMW dealer in Buffalo NY 14221 made 3 weeks ago. I am fearful of an electrical fire from overheating. I do smell an intermittent burning smell but it may in the outside environment rather than from under my hood.
The contact owns a 2020 BMW M340I. The contact stated that after an oil change was performed by an independent mechanic, there was a large amount of gray smoke coming from the exhaust pipe while accelerating from a complete stop. There was no warning light illuminated during the failure. The vehicle was taken to various independent mechanics, and the failure was associated with the PCV (Positive C...
The contact owns a 2020 BMW M340I. The contact stated that upon starting the vehicle, the contact noticed a thick white smoke coming out of the exhaust pipes. In addition, the contact stated that there was an abnormal ticking sound coming from the engine while idling. There was no warning light illuminated. The vehicle had not yet been diagnosed or repaired. The manufacturer had yet to be notifie...
My oil pump went out causing Low pressure codes and resulting in me paying over 2 grand to get it repaired, They super seeded the oil pump they used to use with a new one and theirs many other reports online etc of the 2020 bmw m340 oil pump going out due to plastic internals which can lead to engine failure .
Oil pump common issue of made out plastic cause miss interpretation of oil pressure. Developing engine issues under 50k miles
Hi. I’d like to point out I have not had an incident YET thankfully. However, I want to highlight that the early M340i production releases (2019 and 2020) are HIGHLY likely to experience catastrophic engine failure due to an oil pump being made of plastic on some models. Of the 20 or so complaints listed under this vehicle on NHTSA, I’ve already seen PLENTY of complaints regarding this issue and p...
The contact owns a 2020 BMW M340I. The contact stated that while merging onto the highway and accelerating, there was an abnormally loud banging sound coming from the vehicle before the vehicle stalled. The contact was able to coast forward. There were no warning lights illuminated. The contact removed the panels, and there was metal falling out. The contact stated that there was a sizable hole in...
Electronic parking brake malfunction, disengage ineffective. Ongoing 2020 BMW mechanical issue, multiple dealer submissions, BMW refuses to open active recall. BMW requires $3,000 center panel replacement, out-of-pocket.
The contact owns a 2020 BMW M340I. The contact stated that the vehicle was repaired under NHTSA Campaign Number: 24V576000 (Electrical System, Engine and Engine Cooling); however, the repair failed to prevent the failure from occurring. The contact stated that shortly after the recall repair was completed, the vehicle hesitated to start. The contact stated that several employees at the local deale...
My vehicle doesn’t read the oil level since the fuel pump that BMW used to manufacture the car is made out of plastic material. There has been hundred of complaints about the same issue with the oil pump not working properly due to the fact that BMW used plastic instead of metal etc. I would like for the NHTSA to take a look at this issue and please consider making it a recall for the users that a...
I cruised on a city street at the speed limit. The light turned red and I came to a full stop. The start/stop system was activated and the engine “stopped” to conserve power while my foot was on the brake. The light turned green and I took my foot off the brake, the engine failed to start and did not start with countless attempts. Digital cluster and CarPlay proceeded to work, exterior lights work...
Car will not measure oil past 20%. Seems like lots of 2020 models have a faulty production oil pump. Car is now out of warranty and dealer charged $5000 to fix the issue but do not know 100% if oil pump replacement will fix it. BMW changed the oil pump in the later models but did not mention anything about any recalls or replacements. Unacceptable.
I am unable to read the oil level in my 2020 M340i. Upon checking the oil pressure, the oil pressure goes above 45psi which is the cutoff for the measurement check. Under heavy acceleration, the oil pressure will go over 90psi. My car needs the oil pump to be replaced. The plastic ring surrounding the oil pump for variable oil pressure will crack and lead to a high oil pressure scenario, eventuall...
Showing 20 of 42 complaints. Additional complaints are available via the NHTSA database.
Frequently Asked Questions About the 2020 Bmw M340i
Has the 2020 BMW M340I been recalled?
Yes, the 2020 BMW M340I has 10 recalls on record with NHTSA. Each recall addresses a specific safety defect identified by the manufacturer or NHTSA.
How many complaints does the 2020 BMW M340I have?
The 2020 BMW M340I has 42 complaints filed with NHTSA. None of the complaints involved crashes. No injuries or deaths have been reported.
What is the safety rating for the 2020 BMW M340I?
The 2020 BMW M340I does not have an NHTSA safety rating on file. This can happen for newer model years, specialty vehicles, or models that have not been crash-tested.
What are the most common problems with the 2020 BMW M340I?
The most commonly reported problems with the 2020 BMW M340I involve engine (19 complaints), unknown or other,engine (4 complaints), engine and engine cooling (3 complaints). Other affected components include unknown or other, electrical system,engine, fuel/propulsion system.
How many crash reports does the 2020 BMW M340I have?
There are no crash reports associated with the 2020 BMW M340I in the NHTSA database.
How many fire reports does the 2020 BMW M340I have?
There are no fire reports for the 2020 BMW M340I in the NHTSA database.
Are there any deaths reported for the 2020 BMW M340I?
No deaths have been reported in NHTSA complaints for the 2020 BMW M340I.
How many injuries are reported for the 2020 BMW M340I?
No injuries have been reported in NHTSA complaints for the 2020 BMW M340I.
Should I buy a 2020 BMW M340I?
Based on NHTSA data, the 2020 BMW M340I is research thoroughly before purchasing. It has 42 complaints, 10 recalls. Always have a pre-purchase inspection done by a qualified mechanic.
What components fail most on the 2020 BMW M340I?
The components with the most failures on the 2020 BMW M340I are: 1. ENGINE (19 complaints), 2. UNKNOWN OR OTHER,ENGINE (4 complaints), 3. ENGINE AND ENGINE COOLING (3 complaints), 4. UNKNOWN OR OTHER (3 complaints), 5. ELECTRICAL SYSTEM,ENGINE (2 complaints). ENGINE is the single most-reported problem area with 19 complaints.
What should I know before buying a 2020 BMW M340I?
Be aware of potential engine and electrical system issues, as well as recalls for seat and seat belt problems. Consider the recall history when purchasing a 2020 BMW M340i. The 2020 BMW M340I has 42 NHTSA complaints and 10 recalls on record.
How reliable is the 2020 BMW M340I?
The 2020 BMW M340I receives a reliability score of 85/100, indicating above-average reliability. This is based on 42 owner complaints, 10 recalls, and 0 crash/fire reports in the NHTSA database. Key known issues include Engine Oil Pump Failure and Electrical System Issues.
What are the known issues with the 2020 BMW M340I?
Known issues with the 2020 BMW M340I include: Engine Oil Pump Failure, Electrical System Issues, Seat and Seat Belt Recalls, Back Over Prevention System. These are based on patterns found across 42 NHTSA complaints. 10 of these patterns resulted in formal recalls.
What are the most common engine issues in the 2020 BMW M340i?
Common engine issues include oil pressure warnings and potential catastrophic failure due to a plastic oil pump.
Are there any recalls related to the electrical system of the 2020 BMW M340i?
Yes, there have been recalls related to the starter assembly, which can cause starting problems.
What should I be aware of regarding seat and seat belt issues in the 2020 BMW M340i?
Recalls have been issued for seat and seat belt issues, so be aware of any recalls before purchasing.
Buyer Advice
Our recommendation: Be aware of potential engine and electrical system issues, as well as recalls for seat and seat belt problems. Consider the recall history when purchasing a 2020 BMW M340i.
NHTSA Data Summary for 2020 Bmw M340i
This safety report is based on a comprehensive analysis of data from the National Highway Traffic Safety Administration (NHTSA) for the 2020 Bmw M340i. The data includes 42 consumer complaints filed by vehicle owners, 10 manufacturer-initiated safety recalls, and safety rating assessments associated with this vehicle.
All data presented in this report is sourced from public NHTSA databases. Our AI analysis identifies patterns across complaint narratives, correlates them with recall history, and produces the safety assessment above. This analysis is updated as new complaints and recalls are filed with the NHTSA.
Consumers are encouraged to report vehicle safety problems to the NHTSA at nhtsa.gov. If your vehicle is subject to a recall, contact your dealer to schedule the free repair.
Disclaimer: This analysis is AI-generated from NHTSA public data and does not constitute professional automotive or safety advice. Always verify recall status at NHTSA.gov and consult a qualified mechanic.
Analysis last updated: 2026-05-13