2018 Bmw 340i problems

General information about Bmw-340i
Overview of popular issues
Recalls list

The sixth generation of the BMW 3 Series consists of the BMW F30 (sedan version), BMW F31 (wagon version, marketed as 'Touring') and BMW F34 (fastback version, marketed as 'Gran Turismo') compact executive cars. The F30/F31/F34 generation was produced from October 2011 to 2019 and is often collectively referred to as the F30.

For the sixth generation, the coupé and convertible models were spun off to create the new BMW 4 Series nameplate. BMW also introduced a separate hatchback model under the 3 Series nameplate called the 3 Series Gran Turismo (F34).

The F30 is the first generation of 3 Series to be powered by a range of turbocharged engines exclusively and electric power steering (replacing the hydraulic power steering systems used previously). The F30 also marked the 3 Series' first use of a three-cylinder engine in its 2015 facelift. A new plug-in hybrid F30 model was also introduced in 2016. A long-wheelbase sedan version (model code F35) was sold in China.

The M3 model (designated F80) was introduced in 2014 and is powered by the S55 twin-turbocharged straight-six engine.

In March 2019, the BMW 3 Series (G20) was released as the successor to the F30. But the F34 fastback model continued to be available until early 2020. Later, it was replaced by BMW 4 Series Gran Coupé (G26) in June 2021.

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Common 2018 Bmw 340i problems

Based on complaints from owners of the BMW 340i 2018, several common problems have been reported:

Delay on Acceleration: Owners have experienced a delay in acceleration from a standstill, particularly in Sport mode. The car hesitates for about a second before moving, resembling eco mode behavior, and then suddenly accelerates. This issue can be frustrating for drivers seeking immediate power delivery.
Jerkiness in Gear Shifting: Some owners have reported a jerky sensation during gear shifting, noticeable in both manual and automatic modes. This problem can be more pronounced in manual sport mode or at lower speeds, affecting the overall driving experience.
Infotainment System Malfunctions: Complaints include issues with the infotainment system, such as audio, GPS, and phone connectivity. Owners have reported erratic behavior of the display screen after the car sits in the hot sun, as well as problems with the navigation system failing to engage properly.
Coolant Loss: Another common problem mentioned is coolant loss, often attributed to issues with the coolant reservoir cap cracking. While this may not be a major issue, it requires monitoring and potentially replacing the cap to prevent coolant leaks.
Oil Filter Housing: The oil filter housing has been identified as a known problem area. It is recommended to ensure that this component has been resolved or replaced to prevent any potential issues related to oil filtration and engine performance.
Steering Wheel Misalignment: Some owners have reported misaligned steering wheels, which can impact driving comfort and handling. This issue may require adjustments by a qualified mechanic to ensure proper alignment and driving stability.

These problems highlight various aspects of the BMW 340i 2018 that owners have encountered. Addressing these issues promptly and ensuring regular maintenance can help mitigate potential problems and maintain the overall reliability and performance of the vehicle.

What is the recall on the 2018 BMW 340i?

2018 BMW 340 Recall

The crankshaft sensor may be equipped with incorrect firmware, preventing the sensor from properly processing input from the crankshaft reluctor ring, possibly resulting in a vehicle stall.

Is the 340i expensive to maintain?

The annual maintenance cost of a BMW 340i xDrive is $1,035. Repair and maintenance costs vary depending on age, mileage, location and shop.

What is the problem with the BMW B58 engine?

Unfortunately, some BMW B58 owners are reporting excessive coolant loss - even on low mileage engines. This could be due to faulty seals around the cooling system. However, if coolant loss is extreme, it may be down to a cracked or split coolant hose or damaged radiator.

Is A 340i A Good Car?

The BMW 340i xDrive is an awesome "Driver's Car." It's packed with performance features, luxury appointments, and is a pleasure to drive. This 3-Series 340i xDrive has more room and features than it's predecessors and is such a pleasure to drive! You'll love it!

What is the recall on the 2018 BMW 340i?

2018 BMW 340 Recall

The crankshaft sensor may be equipped with incorrect firmware, preventing the sensor from properly processing input from the crankshaft reluctor ring, possibly resulting in a vehicle stall.

Is A 340i A Good Car?

What is the problem with the BMW B58 engine?

Is a 340i a good daily?

The BMW 340i is a wolf in sheep's clothing – it's a luxurious sports sedan ideal for everyday driving and a beast when unleashed on the track.

2018 Bmw 340i complaints

The NHTSA has received 0 complaints about various vehicle components related to the 2018 Bmw 340i.

You can leave your car complaint via the special form below.

2018 Bmw 340i recalls

The National Highway Traffic Safety Administration (NHTSA) has issued 1 recalls for different components of the 2018 Bmw 340i.

2018-07-11

Manufacturer: BMW of North America, LLC
Components: ENGINE AND ENGINE COOLING:ENGINE
Summary: BMW of North America, LLC (BMW) is recalling certain 2018 BMW 540d xDrive vehicles. The crankshaft sensor may be equipped with incorrect firmware, preventing the sensor from properly processing input from the crankshaft reluctor ring, possibly resulting in a vehicle stall. On September 12, 2018, BMW expanded the recall to a total of 5,309 vehicles including certain 2018-2019 BMW 540d xDrive, 230i M240i, M240i xDrive, X2 sDrive28i, X2 xDrive28i, X1 sDrive28i, X1 xDrive28i, 330i, 330i xDrive, 340i, 340i xDrive, 330i xDrive Gran Turismo, 530i, 530i xDrive, 540i, 540i xDrive, 530e, 530e xDrive, 640i xDrive Gran Turismo, 330e, 2019 430i Gran Coupe, 430i xDrive Gran Coupe, 440i Gran Coupe, 440i xDrive Gran Coupe, 430i, 430i xDrive, 440i, 440i xDrive, 740i, 740i xDrive, MINI Cooper, Cooper S, JCW, MINI Countryman (Cooper, Cooper All4, Cooper S, Cooper S All4, JCW All4), and MINI Clubman (Cooper, Cooper S, Cooper All4, Cooper S All4, JCW All4) vehicles.
Consequence: A vehicle stall can increase the risk of a crash.
Remedy: BMW will notify owners, and dealers will replace the crankshaft sensor, free of charge. The recall began September 6, 2018. Owners may contact BMW customer service at 1-800-525-7417.

Additional sources

More sources of information about 2018 Bmw 340i problems:

2018 340i problems - BMW 3-Series and 4-Series Forum (F30 / F32 ...

https://f30.bimmerpost.com/forums/showthread.php?t=1689597

Hi been getting a few problems with my 340i (mppsk fitted, if that makes difference) 1. delay on accelaration from standstill (in sport mode), ...

Bmw 340i thoughts /problems?? | BMWFanatics

https://www.bmwfanatics.co.za/threads/bmw-340i-thoughts-problems.95691/

Mar 4, 2021 ... Most common issues are coolant loss (Either the expansion tank cap needs to be replaced or a stone hit the radiator). oil filter needs to be ...

Looking to buy a 2018 340i. What are some common problems with ...

https://www.reddit.com/r/BMW/comments/13uaoxs/looking_to_buy_a_2018_340i_what_are_some_common/

May 29, 2023 ... What are some common problems with the power train? I haven't done ... r ...

BMW F31 - 340i - any common problems? - Page 1 - BMW General ...

https://www.pistonheads.com/gassing/topic.asp?h=0&f=72&t=2010405

Nov 18, 2022 ... Common issues with the B58 are oil filter housing which should of been resolved or replaced by now and the front radiators are a bit weak so ...