Exact make, model and year evidence from official US sources. Recall campaigns, ODI investigations, complaint allegations and EPA estimates remain separate.
A campaign may cover only certain production dates, plants or equipment. A zero result here is not safety clearance. Use NHTSA’s official VIN tool for the individual vehicle.
Exact model-level NHTSA results for 2004 BMW Z4. Campaign records are official safety actions; applicability to a particular car still requires its VIN.
ON CERTAIN PASSENGER VEHICLES, UNDER CERTAIN ENVIRONMENTAL CONDITIONS, A VAPOR LOCK IN THE FUEL PUMP COULD OCCUR CAUSING THE ENGINE TO STALL. IF THIS WERE TO HAPPEN, THE ENGINE WOULD NOT BE ABLE TO BE RESTARTED FOR APPROXIMATELY 15 TO 20 MINUTES.
Consequence
IF STALLING WERE TO OCCUR, THE DRIVER WOULD BE UNABLE TO MAINTAIN VEHICLE SPEED OR ACCELERATE, INCREASING THE RISK OF A CRASH.
Remedy
DEALERS WILL INSTALL A RESISTOR IN THE ELECTRICAL LINE POWERING THE FUEL PUMP IN ORDER TO PREVENT AN OCCURRENCE OF VAPOR LOCK. THE RECALL BEGAN MAY 11, 2004. OWNERS SHOULD CONTACT BMW AT 1-800-831-1117.
02 · Owner allegations
411 NHTSA complaints
Counts are not adjusted for sales, vehicle age, mileage, publicity or reporting behavior. They are allegations, not defect findings or a reliability score.
Crash mentions
1
Fire mentions
2
Injuries reported
0
Most-reported component labels
STEERING378
AIR BAGS18
ELECTRICAL SYSTEM14
EXTERIOR LIGHTING6
ELECTRONIC STABILITY CONTROL (ESC)3
POWER TRAIN3
Complaints across nearby BMW Z4 model years
Totals for the same nameplate, scaled against its highest year here. They are not adjusted for how many were sold, how old they are, how far they are driven, or how much publicity a fault received — an older or better-selling year will usually carry more reports. This shows where the reporting sits, not which year is better.
An investigation means ODI reviewed a possible safety issue for this exact model-year identity. Opening one is not a defect finding; closing one does not by itself clear a vehicle.
FuelEconomy.gov records are summarized as ranges where this model name has multiple engines, drivetrains or trims.
EPA configurations
6
Combined economy
20–21 mpg/MPGe
City / highway
17–18 / 25–27 mpg/MPGe
Engine displacement
2.5–3 L
Cylinders
6
Fuel type
Premium
Drive
Rear-Wheel Drive
Vehicle class
Two Seaters
Annual fuel-cost estimate
$3800–4000
05 · Evidence strength
Exact identity. Explicit limits.
No opaque score. Evidence strength is expressed through source availability, exact match method, jurisdiction and honest empty states.
exact match
Recall campaigns
1 exact US model-year records in this bounded view.
exact match
Complaints
411 exact US model-year allegations; narratives and VIN fragments are omitted.
exact match
ODI investigations
2 exact US model-year action numbers in the approved import snapshot.
canonical only
Model aliases
Only the exact NHTSA vPIC model name is published; unverified aliases are not merged.
not published
Manufacturer ownership
No rights-reviewed official ownership record is joined to this exact model-year.
PUBLIC EVIDENCE PASSPORT
Identity, freshness and provenance.
The canonical URL is this file’s permanent public identifier. Source IDs and timestamps show exactly what was matched and when; they do not turn the evidence into a verdict.
Only NHTSA vPIC, NHTSA ODI complaints and investigations, NHTSA recalls and FuelEconomy.gov contribute to this vehicle claim. CPSC equipment notices are searched separately and never joined to vehicle fitment. UK MOT, Canadian, New Zealand and European records are not merged into this US claim.
06 · Research paths
Diagnose first. Confirm fitment.
These are transparent searches, not diagnoses or endorsed parts. Recall remedies come before purchases; exact part fitment requires VIN, trim, powertrain, production date and OE number.
378 complaint labels
STEERING
Check recalls and diagnostic information before replacing anything.
Awin US and R2 affiliate inventory are not published until a US programme, merchant and exact-fitment projection are approved. No offer currently has both merchant approval and exact vehicle fitment, so commercial links never count as evidence.