2004 BMW 525i problems
Verdict · NHTSA data
One of the years to avoid
With 123 complaints filed to NHTSA — about 5.9 times the median 525i year — the 2004 model ranks #1 of 21 525i years for complaint volume. It lands on the years-to-avoid list.
Airbags leads the complaint categories with 34 reports (28% of the total).
123
NHTSA complaints
0
Recalls
1
Investigations
0
Crash-involved
25
Fires reported
2
Injuries
0
Deaths
—
NCAP overall
How does 2004 compare to other 525i years?
What are the most common 2004 BMW 525i problems?
| Component | Complaints | Share | vs prior year |
|---|---|---|---|
| Airbags | 34 | 28% | ▲ up |
| Electrical System | 24 | 20% | ▲ up |
| Seats | 17 | 14% | ▲ up |
| Seat Belts | 14 | 11% | ▲ up |
| Transmission | 7 | 6% | ▲ up |
| Other | 4 | 3% | ▲ up |
| Body & Structure | 4 | 3% | ▲ up |
| Brakes | 4 | 3% | ▲ up |
| Engine | 3 | 2% | ▲ up |
| Speed Control | 3 | 2% | ▲ up |
| Visibility & Wipers | 2 | 2% | ▼ down |
| Lighting | 2 | 2% | ▼ down |
| Steering | 2 | 2% | ▲ up |
| Tires & Wheels | 2 | 2% | ▲ up |
| Latches & Locks | 1 | 1% | — flat |
Consumer complaints filed with NHTSA
Representative excerpts, cleaned of personal information. These are consumer statements, not verified defects.
“TL* THE CONTACT OWNS A 2004 BMW 525I. THE CONTACT STATED WHILE STARTING THE IGNITION, THE FRONT SEAT PASSENGER AIR BAG WARNING INDICATOR ILLUMINATED UNTIL THE ENGINE WAS TURNED OFF. THE FAILURE RECURRED TWO TIMES. THE VEHICLE HAD NOT BEEN DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE…”
“THERE IS A COMPONENT CALLED MPM(MICRO POWER MODULE) BENEATH THE SPARE TIRE AND IS COMPLETELY BURNT DUE TO SOME WATER IN THE TRUNK. THE PLASTIC CASE WHICH COVERS THE COMPONENT IS BURNT AND THERE IS CLEAR INDICATION OF FIRE. SPOKE TO BMW CUSTOMER RELATIONS AND THEY ADVISED ME TO FILE A COMPLAINT HERE…”
“TL* THE CONTACT OWNS A 2004 BMW 525I. THE CONTACT STATED THAT A BURNING ODOR WAS EMITTED FROM THE DRIVER'S SIDE SEAT AS THE HEAT BECAME ABNORMALLY HOT. THE CONTACT SUFFERED BURNS TO THE BACK AS A RESULT. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR INSPECTION OR REPAIRS. THE MANUFACTURER WAS MADE…”
“I WAS DRIVING IN TRAFFIC WHEN SMELL AND SMOKE CAME FROM THE BOTTOM OF MY CAR, I PARK THE CAR AND CHECK, MY SEAT WAS BURN, I TURN OFF THE HEATING AND I'M NOT BE ABLE TO USED AGAIN THE DEALER ON PARK AVE IN SOUTH HACKENSACK NJ DON'T GET BACK TO ME. PLUS NOW LAST WEEK MAY 31 THE PASSENGER SAFETY LIGHT…”
“I WAS DRIVING ON MY WAY TO WORK AND STARTED SMELLING SOMETHING BURNING. ALL ELECTRICAL WARNING LIGHTS STARTED LIGHTING UP THE DASH AND THEN DISPLAYS GO BLANK. PASSENGER COMPARTMENT WAS FILLING UP WITH SMOKE COMING FROM UNDER GLOVE BOX. I PULLED OVER AND CALLED FIRE DEPARTMENT. WE DISCONNECTED…”
2004 BMW 525i — common questions
Is the 2004 BMW 525i reliable?
NHTSA data argues against it: 123 complaints put the 2004 model at #1 of 21 525i years. It is one of the 525i years to avoid.
What are the most common 2004 525i problems?
According to NHTSA complaint data, the leading problem areas are airbags (34 complaints), electrical system (24 complaints), seats (17 complaints).
Does the 2004 BMW 525i have recalls?
No. NHTSA lists no recall campaigns for the 2004 BMW 525i.
Is the 2004 BMW 525i under NHTSA investigation?
NHTSA opened one investigation into this model year; all are now closed.
Which BMW 525i years should you avoid?
Based on complaint rates and open investigations, the 525i years to avoid are 2004, 2006, 2007, 2005, 1990, 2002, 2003, 1995. The cleanest record among 525i years belongs to 2011.
Related
Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.
Compiled by Sharon Ben-Moshe, Founder.