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Transmission and drivetrainPart report

2018 BMW 330I Transmission and drivetrain Problems

Complaints
1about this part
Share
3%of 32 total for the year
Median mileage
—not reported
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 1 complaints about the transmission and drivetrain of the 2018 BMW 330I, 3% of the 32 complaints for this model year.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Multiple codes came on right after I had gotten my thermostat and my water pump fixed. However it ended up being that there was more leaks throughout the rest of the car. The car has currently cost me $3400 to fix and it’s still not fixed because nobody can figure out where the actual leak is coming from. The coolant is leaking and nobody can figure out where, it’s been having jerking issues since it started leaking and I read on other Bmw’s that the coolant leaks into the head gasket, causing the engine to blow”

NHTSA complaint #11569599, filed 2024-02

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
2024117%
2022117%
202113%
202012%
2019512%
201813%
201725%
200610%
200514%
200334%
200249%
20012320%

Other parts of the 2018 BMW 330I

Engine
12 complaints
Other or unknown
6 complaints
Fuel system
5 complaints
Electrical system
4 complaints
Engine cooling
2 complaints
Vehicle speed control
2 complaints
Brakes
1 complaints
Forward collision avoidance
1 complaints
Seat belts
1 complaints
Steering
1 complaints
Body and structure
1 complaints
Tires
1 complaints

← All problems reported for the 2018 BMW 330I

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology