2018 BMW 640I: common problems
The maker issued 163 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 163
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 3 L · petrol · turbo · 6 cyl
- automatic, 8-speed
Drive: RWD, AWD
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 0 | 0 | 58 |
| Equipment | 0 | 0 | 55 |
| Engine and cooling | 0 | 0 | 18 |
| Steering | 0 | 0 | 11 |
| Air bags | 0 | 0 | 9 |
| Backover prevention | 0 | 0 | 9 |
| Engine | 0 | 0 | 8 |
| Seats | 0 | 0 | 8 |
| Exterior lighting | 0 | 0 | 7 |
| Fuel system | 0 | 0 | 7 |
| Structure | 0 | 0 | 7 |
| Service brakes | 0 | 0 | 6 |
| Visibility | 0 | 0 | 6 |
| Wheels | 0 | 0 | 5 |
Comparison
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Steering. Steering play, power assist, rack and tie rods after a wheel impact.
- Air bags. Check the SRS light, stored codes and airbag/curtain status after any impact.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- A situation may occur where the front passenger seat is not occupied; however, a “fasten seat belt”…
A situation may occur where the front passenger seat is not occupied; however, a “fasten seat belt” warning and a front passenger seat air bag deactivation message appears. If the situation is currently present, sit in…
- The Supplemental Restraint Systems (SRS) Front Passenger’s Seat Occupancy Capacitive Interior Sensor (CIS)…
The Supplemental Restraint Systems (SRS) Front Passenger’s Seat Occupancy Capacitive Interior Sensor (CIS) Mat for defects in materials and/or workmanship that causes a false seat occupancy alert to occur has been…
- EVAP SYSTEM PURGE (VENT) VALVE EXT LTD WTY (ELW) 15/150
- Check Control message (CCM) indicates
(ID 213): Stop, exercising due care. Voltage supply The Service Engine Soon light is on with the following DME Fault Code: 21B209 - Starter alternator / belt for 48V system (OSA_RIEMEN_RISS): Belt betweenCombustion…
- One or more of the LED daytime running lights are dim or discolored
- The basic conditions for initializing the power windows are not met
- The Central Information Display goes black intermittently due to resets of the Head Unit (HU-H3)
FaultB7F8F9 ÃÂâÃÂÃÂÃÂàÃÂâÃÂÃÂÃÂÃÂHU-H: ResetÃÂâÃÂÃÂÃÂàwill be stored in the HU-H3.
- The electrical system of BMW vehicles has been subject to an ongoing development process over the last few…
The electrical system of BMW vehicles has been subject to an ongoing development process over the last few years. This has led to increased demands being placed on the battery. This document covers important…
- SITUATION Unusual noises occur only when operating the steering column in the axial direction
1. A one-time thump sound at the start of movement Shortly after the steering column starts moving, retracting, or extending, a one-time thump noise is heard. See attached video V32 03 23 2. Humming noise while…
- A vehicle arrives at your center to be diagnosed for a micro-leak in the fuel evaporative (EVAP)…
A vehicle arrives at your center to be diagnosed for a micro-leak in the fuel evaporative (EVAP) system(NVLD natural vacuum leak detection). For this condition, the following fault is stored in the DME: 190302 - fuel…
- PRESSURE CONTROL VALVE (PCV) EXTENDED LTD WTY 15 YEARS/150,000 MILES
- ?The front seat will not calibrate/initialize, and the stored faults cannot be deleted
NHTSA lists 163 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2018 BMW 640I?
There are no owner complaints in the NHTSA data for this year; the data comes from 163 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2018 BMW 640I?
NHTSA lists 163 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2018 BMW 640I from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2018 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.