RoadVitals

2018 BMW 340I Owner Complaints

Reports submitted to NHTSA by owners and drivers, shown in full

Data refreshed

Complaints on fileComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
3
Latest Oct 26, 2023
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
1
Filed in the last 12 monthsReports filed with NHTSA in the trailing 365 days. Recent volume reflects attention and vehicle age as much as anything else.
0
Reports on file since Mar 8, 2021

What this page shows

Our database holds 3 NHTSA owner-reported complaints for the 2018 BMW 340I. Each one is a report filed by an owner or driver and published by NHTSA without most of them being verified. A complaint is not a confirmed defect, not a recall and not a manufacturer bulletin. Narratives are shown exactly as filed.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Complaints, most recent first

Showing 1–3 of 3

Engine
Filed Oct 26, 2023

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 before 12/7 are susceptible to this deadly situation and bmw refuses to cover for any damages even though they know it's a serious issue and they won't even cover the rock guard

NHTSA ID
11552110
Incident
Oct 25, 2023
Fuel system
Filed Apr 22, 2023

Fuel Tank Filler Hose Collapse - unable to refuel and vehicle remains stranded.

NHTSA ID
11518472
Incident
Apr 3, 2023
Engine
Filed Mar 8, 2021
Fire reported

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 YEAR OLD CAR WAS A TOTAL LOSS. A EXPERT FROM BMW OF NORTH AMERICA INSPECTED THE CAR REPORTING THAT WAS TOO MUCH DAMAGE TO DETERMINE THE FIRE'S CAUSE. BMW NA CALLED TO REPORT THE RESULT NOT THEIR INVESTIGATION AND SAY THAT NO WRITTEN REPORT WAS AVAILABLE, ONLY THE VERBAL VERBAL FONECON.

NHTSA ID
11399787
Incident
Jan 18, 2021
Mileage
20,000 mi

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

Data sources

Data on this page last refreshed .