2018 BMW 340i recalls & problems

The 2018 BMW 340i has 1 safety recall and 3 owner complaints on file with NHTSA. The most-reported problem area is engine (2 complaints).

Recalls1safety recalls

Complaints3filed by owners

Crashes · fires0 · 1reported in complaints

Injuries · deaths0 · 0reported in complaints

Safety recalls

Engine and engine cooling › Engine

NHTSA recall 18V465000 · Jul 11, 2018 · 5,309 vehicles

Problem: 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.

Risk: A vehicle stall can increase the risk of a crash.

Fix: 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.

Recall repairs are free at any authorised dealer. A recall listed here may already have been fixed on a particular car: enter its 17-character VIN at nhtsa.gov/recalls to see open recalls.

Fuel economy

340i

25mpg combined

City / highway	21 / 32 mpg
Fuel	Premium Gasoline

3 L · 6 cyl · Automatic (S8) · Rear-Wheel Drive · about $3,300/year to fuel

340i xDrive

25mpg combined

City / highway	21 / 31 mpg
Fuel	Premium Gasoline

3 L · 6 cyl · Automatic (S8) · All-Wheel Drive · about $3,300/year to fuel

340i

23mpg combined

City / highway	19 / 29 mpg
Fuel	Premium Gasoline

3 L · 6 cyl · Manual 6-spd · Rear-Wheel Drive · about $3,550/year to fuel

340i xDrive

23mpg combined

City / highway	19 / 29 mpg
Fuel	Premium Gasoline

3 L · 6 cyl · Manual 6-spd · All-Wheel Drive · about $3,550/year to fuel

340i xDrive Gran Turismo

23mpg combined

City / highway	20 / 29 mpg
Fuel	Premium Gasoline

3 L · 6 cyl · Automatic (S8) · All-Wheel Drive · about $3,550/year to fuel

EPA estimates from fueleconomy.gov for each engine and transmission sold. Annual cost is the EPA's estimate for 15,000 miles a year at its current fuel and electricity price assumptions. Your results will vary.

What owners report

Problem area	Complaints	Crashes	Fires	Injuries	Typical mileage*
Engine	2	0	1	0	—
Fuel/propulsion system	1	0	0	0	—

*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.

Recent owner complaints

Oct 25, 2023Engine
The radiator failed due to rocks flying through the grill and smashing the radiator causing coolant to flow out of the radiator which could cause deadly issues if a car has no coolant while operating. Bmw knows this is an issue and refuses to warranty/recall the parts. They know its an issue because after 12/17 every 340i came with a rock guard to protect the radiator but every car before that was just left to be victim of a potentially deadly situation including mine (manufactured 10/17). Bmw refuses to acknowledge the problem but the addition of the rock guard to cars after 12/17 should be enough evidence to show they knew it was an issue. Now all 2016-2018 m sport f30 chassis built…
Apr 3, 2023Fuel/propulsion system
Fuel Tank Filler Hose Collapse - unable to refuel and vehicle remains stranded.
Jan 18, 2021 · 20,000 miles · fireEngine
RETURNING FROM A LOCAL GROCERY STORE I DROVE INTO OUR GARAGE AND SHUT OFF THE ENGINE. IMMEDIATELY I HEARD A LOUD POP FROM THE ENGINE COMPARTMENT, LIKE FROM A FIRECRACKER, AND I SAW BLACK SMOKE COMING FROM THE HOOD AND FROM THE LEFT WHEEL WELL. I IMMEDIATELY TRIED TO RESTART THE CAR TO DRIVE OUT OF THE GARAGE. NOTHING WORKED SO I PUSHED THE CAR OUT OF THE GARAGE BY HAND AND RELEASED THE HOOD LATCH. BY NOW THE HOOD'S EXTERNAL SAFETY LATCH WAS SO HOT I COULD NOT RELEASE IT. WITH THE HOOD CLOSED, I WAS UNABLE TO EXTINGUISH THE ENGINE FIRE USING A 15 LB CO2 AND A 5 LB ABC EXTINGUISHER. THE CITY FIRE DEPARTMENT ALSO WERE UNABLE TO EXTINGUISH THE FIRE UNTIL THEY SAWED THE HOOD IN HALF. THE 2 1/2…

Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.

NHTSA defect investigations

EA21002 · opened Sep 17, 2021 · openDesiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf.Consequently, all frontal inflators using propellant 2004 that do not contain a "desiccant" (a substance that traps and holds moisture) in US vehicles are under recall. These "non-desiccated" inflators either have been or are required to be replaced.In some cases, the remedy part for these recalled…