NHTSA Complaint #11712043 — 2004 MERCEDES BENZ E500

I am submitting this complaint regarding a suspected safety-related defect involving the fuel system of my Mercedes-Benz vehicle. I have experienced a persistent gasoline odor originating from the vehicle. The presence of fuel odor is not a normal operating condition and reasonably indicates a potential failure involving the fuel tank, fuel lines, or related fuel system components. Fuel vapors present a known fire and explosion hazard and constitute a safety risk to vehicle occupants, surrounding vehicles, and property. This condition was not present prior to the issue and has persisted despite inspection. I reported this concern to Mercedes-Benz USA and referenced that fuel odor and fuel tank-related defects have been documented in other Mercedes-Benz vehicles. During my communication with Mercedes-Benz USA, I was informed that an extended or long-term warranty related to the fuel tank or fuel system had existed but was no longer applicable because the coverage period had expired. I was not made aware of this extended warranty at the time it was active and therefore had no opportunity to seek inspection or repair while coverage was in effect. Mercedes-Benz USA has acknowledged my complaint but has declined to provide corrective action beyond internal review. Given the safety implications of fuel system defects and the potential impact of inadequate disclosure of extended safety-related warranty coverage, I am requesting that NHTSA document this complaint and evaluate whether this condition represents a broader defect trend and whether recall or further investigation is warranted. This complaint is submitted to ensure the issue is formally recorded as a potential fuel system safety defect.