NHTSA Investigations
5,336 safety defect investigations.
NHTSA Safety Defect Investigations
Browse 5,336 NHTSA safety defect investigations. When a potential safety issue is identified through consumer complaints, recall requests, or other sources, NHTSA opens an investigation to determine the scope and severity of the defect. Investigations may lead to voluntary recalls by manufacturers or, in rare cases, mandatory recall orders. Use the filters below to search by year, manufacturer, status, or keyword.
Investigations
Browse 5,336 NHTSA investigations.
| Opened | ID | Vehicle | Subject | Units | Status |
|---|---|---|---|---|---|
| May 23, 1977 | EA77038 | — | RET. FAIL TO LOCK | — | Closed |
| May 23, 1977 | EA77039 | — | FAN BLADE FAILURES | — | Closed |
| May 23, 1977 | EA77040 | — | SEAT BELT UNLATCHING | — | Closed |
| May 15, 1977 | EA77034 | — | GAS T FILL PIPE / CONN. | — | Closed |
| May 12, 1977 | EA77036 | — | STALLING | — | Closed |
| May 10, 1977 | EA77035 | — | FRONT WHEEL COLLAPSE | — | Closed |
| May 2, 1977 | EA77032 | — | POWER BRAKES/MANIFOLD MOD | — | Closed |
| Apr 18, 1977 | EA77030 | — | REAR BRAKE DRUM DEFECT | — | Closed |
| Apr 18, 1977 | EA77031 | — | DISC FAILURE IN FULL TURN | — | Closed |
| Apr 14, 1977 | EA77028 | — | ANTI-FREEZE IN AIR SYSTEMS | — | Closed |
| Apr 14, 1977 | EA77029 | — | EATON 121 BRAKE SYSTEMS | — | Closed |
| Apr 13, 1977 | EA77027 | — | POOR QUALITY | — | Closed |
| Mar 14, 1977 | EA77022 | — | TRAILER HITCH | — | Closed |
| Mar 14, 1977 | EA77023 | — | UNKNOWN | — | Closed |
| Mar 1, 1977 | DP77008 | 1971 CHEVROLET CHEVROLET | POWER BRAKE BOOSTER | — | Closed |
| Feb 28, 1977 | EA77021 | — | HEADLIGHT SWITCH | — | Closed |
| Feb 25, 1977 | EA77020 | — | 121 BRAKES | — | Closed |
| Feb 24, 1977 | EA77019 | — | P.BRAKE BOOSTER | — | Closed |
| Feb 23, 1977 | EA77025 | — | FRONT AXLE U-BOLT | — | Closed |
| Feb 10, 1977 | EA77017 | — | SWITCH FAILURE RES.IN FIRE | — | Closed |
| Feb 10, 1977 | EA77018 | — | JACKS-FAIL OR DAM. SHEETMT | — | Closed |
| Feb 5, 1977 | EA77037 | — | WINDSHIELD WIPER PUMP | — | Closed |
| Jan 29, 1977 | EA77070 | — | BENDIX DOUBLE CHECK VALVE | — | Closed |
| Jan 3, 1977 | EA77016 | — | BRAKE FLUID VAPOR LOCK | — | Closed |
| Dec 14, 1976 | EA77014 | — | FRACTURED INSTR. PANEL | — | Closed |
| Dec 2, 1976 | EA77013 | — | WINDSHIELD WASHER BAGS | — | Closed |
| Dec 1, 1976 | EA77012 | — | BRAKES/ACCEL CABLE | — | Closed |
| Dec 1, 1976 | EA77015 | — | PACKER SEPARATES FM TRUCK | — | Closed |
| Nov 23, 1976 | EA77010 | — | P.STEER.HOSE TOO CLOSE EXH | — | Closed |
| Nov 22, 1976 | EA77011 | — | WINDSHIELD BREAKS AT HS | — | Closed |
| Nov 16, 1976 | DP77003 | 1976 FORD LTD | EXCESSIVE REFLECTIVE GLARE | — | Closed |
| Nov 16, 1976 | DP77005 | 1974 VOLVO 145 | DEFECTIVE AND UNRELIABLE TRANSMISSION | — | Closed |
| Nov 8, 1976 | EA77026 | — | HYDRAULIC FLOOR JACK | — | Closed |
| Nov 2, 1976 | EA77008 | — | EXPLOSIONS AND FIRES | — | Closed |
| Nov 2, 1976 | EA77009 | — | BRAKES FAILED | — | Closed |
| Oct 22, 1976 | EA77007 | — | CARBURETOR | — | Closed |
| Oct 10, 1976 | EA77024 | — | HITCH SUPPORT FAILURE | — | Closed |
| Oct 7, 1976 | EA77004 | — | BATTERY CONTACT WITH HOOD | — | Closed |
| Oct 7, 1976 | EA77006 | — | BRAKE BRACKET FAILURE | — | Closed |
| Oct 3, 1976 | DP77004 | 1972 MERCURY CAPRI | BROKEN SWAY BAR | — | Closed |
| Sep 1, 1976 | DP77002 | 1976 JEEP CHEROKEE | ELECTRONIC IGNITION FAILURE AND GAS FUME | — | Closed |
| Aug 19, 1976 | EA77003 | — | CHASSIS NOT GROUNDED | — | Closed |
| Aug 6, 1976 | EA77002 | — | INCOMPATIBLE TRANSMISSION | — | Closed |
| Jul 28, 1976 | EA77001 | — | WHEEL FAILURES | — | Closed |
| Jul 27, 1976 | DP77001 | 1973 MAZDA MAZDA | TIE ROD BREAKAGE | — | Closed |
| Jul 12, 1976 | EA77005 | — | STEERING PROBLEMS | — | Closed |
| Jul 1, 1976 | EA76031 | — | TRAILERS WANDER | — | Closed |
| Jun 30, 1976 | EA76030 | — | BRAKE HOSE FAIL | — | Closed |
| Jun 27, 1976 | DP76011 | 1974 VOLVO VOLVO | FAULTY BRAKE WARNING LIGHT | — | Closed |
| Jun 21, 1976 | DP76012 | 1972 VOLKSWAGEN 411 | POOR ILLUMINATION OF SPEEDOMETER | — | Closed |
Frequently Asked Questions
When NHTSA receives enough complaints or evidence suggesting a potential safety defect in a vehicle, it opens a formal investigation. The process typically begins with a Preliminary Evaluation (PE) to assess whether a defect trend exists, followed by an Engineering Analysis (EA) if the evidence warrants deeper examination. Investigations can result in voluntary recalls by the manufacturer, mandatory recall orders, or closure if no defect is confirmed.
An "Open" investigation means NHTSA is actively reviewing the potential safety defect — engineers are collecting data, analyzing complaints, and may be testing vehicles. A "Closed" investigation means the review is complete. Closure can mean the manufacturer issued a recall, NHTSA determined no defect exists, or the issue was resolved through other means such as a technical service bulletin or design change in newer models.
Roughly half of NHTSA investigations result in a safety recall. The rest are closed without a recall — either because the defect couldn't be confirmed, the failure rate was too low to warrant a recall, or the manufacturer addressed the issue voluntarily through other channels. Investigations involving higher injury or fatality counts, or those affecting a large number of vehicles, are more likely to result in recalls.