2004 BMW K Series Problems
- Complaints
- 5filed with NHTSA
- Median mileage
- 25,838miles, 4 complaints with mileage
- Recalls
- 1campaigns on record
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
Sources: NHTSA records for the 2004 BMW K Series (complaints, recalls, investigations). Report an error
NHTSA recorded 5 consumer complaints for the 2004 BMW K Series. The part named most often is fuel system, with 3 complaints (60% of the total), followed by brakes (1) and vehicle speed control (1). 4 of the complaints include a mileage, and 100% of those were filed for vehicles with under 50,000 miles; the median is 25,838 miles. NHTSA lists 1 recall campaign and 5 technical service bulletins for this model year. Fuel system complaints overlap with 1 recall campaign covering the hoses, lines/piping, and fittings, 1 NHTSA investigation and 2 technical service bulletins filed under the same part.
This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.
Which parts are reported most
Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.
- Fuel system3 60%
- Brakes1 20%
Example complaints
Fuel system: “Upon arriving at home and shutting down the motorcycle, I could smell gas coming from the bike. I checked the fuel line quick disconnects and found that one was leaking fuel. Since the fuel pump was off, the fuel was not leaking very badly. I attempted to press the quick disconnect coupling together to insure that it was fully seated. When I did that, the end of the male connector, which was cracked and leaking, snapped off rendering the coupling useless. This also rendered the motorcycle inoperable. …”
NHTSA complaint #10205420, filed 2007-10, 37,900 milesBrakes: “The brake failure light lit up and I lost power brakes and even at 10 MPH it was extremely difficult to stop the bike. The module controls the servo linkage also. This is a know problem with Bmw k bikes with ABS and Bmw refuses to recall the bikes. I believe it is a serious safety problem and riders cannot get any help from Bmw. It is a 2500 dollar repair and it happens to many bikes at around 20,000 miles. No warning. We need help with putting some pressure on Bmw. If you want verification call any Bmw motorcycle dealer. There are lots of posts on I-Bmw forums as well. …”
NHTSA complaint #10694339, filed 2015-03, 24,000 milesMileage when problems were reported
100% of the 4 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 24,000 and 27,676 miles.
Complaints by year filed
Fewer than 15 complaints, too few for a reliable trend.
Recalls and investigations
- 04V028000Jan 15, 2004Fuel system, gasoline › Delivery › Hoses, lines/piping, and fittingsCovers: BMW K Series 2001–2004, R Series 2000–2002, 2004
On certain motorcycles, the o-ring in fuel line quick-disconnect coupling could become damaged and lead to a fuel leak. There is also a problem involving crimp-type hose clamps, which can result in a fuel leak.
Recall details for the 2004 BMW K Series → · Check a VIN at nhtsa.gov/recalls
NHTSA investigations
- PE03054Fuel line leakageClosed · Dec 1, 2003
Technical service bulletins
TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 5 on record; the latest 5 are shown.
- 10249027Jan 11, 2024Electrical system. 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…
- 10182619Oct 1, 2020Equipment, Electrical system. Discharged Battery Energy Diagnosis Must Be Performed: The electrical system of BMW vehicles has been subject to an ongoing development process over the last few years. This has led to increased…
- 10037025Aug 1, 2010Exterior lighting. Bmw: procedure for determining and replacing incandescent and halogen light bulbs under warranty.
- 10033130Dec 1, 2009Fuel system. Bmw vehicles: fuel level sensor repairs. Where it is necessary to replace the right or the left side fuel level sensor due to a failure, the entire pump and housing or delivery unit (suction jet…
- 10030825Nov 1, 2007Fuel system, Other or unknown. Bmw motorcycle: engine fuels containing ethanol. Bmw motorrad has no objection to the use of si engine fuels containing up to a maximum of 10% ethanol and imposes no warranty restrictions. Ethanol…
Other model years of the BMW K Series
| Year | Complaints | Median mi | Recalls | Crash ★ | MPG | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|---|
| 2004 | 5 | 25,838 | 1 | — | — | — | Not enough data |
| 2003 | 6 | 42,553 | 1 | — | — | — | Not enough data |
Frequently asked questions
How many NHTSA complaints does the 2004 BMW K Series have?
NHTSA recorded 5 consumer complaints for the 2004 BMW K Series as of Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 2004 BMW K Series is reported most often?
Fuel system is named most often, in 3 complaints (60% of the total), followed by brakes with 1.
Has the 2004 BMW K Series been recalled?
NHTSA lists 1 recall campaign for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.
At what mileage are problems with the 2004 BMW K Series reported?
Among the 4 complaints that include a mileage, the median is 25,838 miles and the middle half falls between 24,000 and 27,676 miles; 100% were filed for vehicles with under 50,000 miles.
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.