1978 Jaguar XJ12: complaints, problems and recalls
Explore the records behind recurring owner reports.
Key facts
1 owner complaints analyzed
1 distinct recall campaigns
Not available median reported failure mileage
Scope: 1978 model year. Data updated: . 0 complaints include usable failure mileage. View data status.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Most common problems
Tires:Tread/Belt is the most frequently named component, appearing in 1 of 1 complaints (100.0%). A complaint can name multiple components.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Tires:Tread/Belt | 1 |
Tires:Tread/Belt: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 0 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 0; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
No usable failure mileage is recorded. 1 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2000 | 1 |
2000: 1
Pattern summary
Tires:Tread/Belt leads the component reports. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Examples from the source records
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 557187 · 2000-11-09 (November 9, 2000)
BRIDGESTONE TIRE (P225 70 R15) EXPERIENCED TREAD SEPARATION. *SLC
Owner-reported narrative. Look up ODI 557187 at NHTSA ↗
Recall history
1 distinct campaigns affect this selection. Announcement dates below are different from vehicle model years. A campaign may cover multiple years.
78V060000 · Fuel System, Gasoline:Delivery:Hoses, Lines/Piping, And Fittings
Reported: 1978-03-21 (March 21, 1978)
THE AIR PIPE AND FUEL LINE PIPE MAY CONTACT EACH OTHER AND RESULT IN CHAFING OF THE FUEL RAIL.
Remedy: THE DEALER WILL REROUTE AIR OR FUEL LINE TO PRECLUDE CONTACT, WITHOUT CHARGE TO OWNER.
NHTSA campaign record ↗Vehicle analysis explorer
Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.
Data completeness
1 unique complaints in this selection. Analysis snapshot: 2026-10-01.
Missing, zero and invalid mileage is excluded. Dates after the snapshot are excluded. Examples are limited selections, not a representative sample.
Problems by model year
Model-wide comparison of the eight most reported components across the model. Cells show counts and shares within each model year. Open a cell for source examples.
| Component | 1991 | 1994 | 1996 |
|---|---|---|---|
| Vehicle Speed Control | 00.0%No examples available for this selection. | 330.0% | 00.0%No examples available for this selection. |
| Service Brakes, Hydraulic:Antilock/Traction Control/Electronic Limited Slip | 00.0%No examples available for this selection. | 220.0%ODI 705495CRUISE CONTROL LOCKED UP -- CAR CONTINUED TO ACCELERATE -- BRAKES INOPERATIVE AGAINST A 300 HP ENGINE -- CONDITION CORRECTED WHEN CRUISE TURNED OFF. *AK | 00.0%No examples available for this selection. |
| Electrical System:Ignition | 00.0%No examples available for this selection. | 110.0%ODI 784081IGNITION FAILURE RESULTED IN VEHICLE FIRE, POSSIBLY RELATED TO THE FAULTY DESIGN OF THE MARELLI IGNITION SYSTEM. *MJS | 00.0%No examples available for this selection. |
| Electrical System:Ignition:Switch | 00.0%No examples available for this selection. | 110.0%ODI 781989VEHICLE FAILS TO START WITH TURN OF KEY. AFTER SEVERAL ATTEMPTS IT WILL START. | 00.0%No examples available for this selection. |
| Electrical System:Wiring:Front Underhood | 1100.0%ODI 8002612CONSUMER WAS TRAVELING ABOUT 60MPH ON HIGHWAY AND WITHOUT PRIOR WARNING VEHICLE SHUTDOWN. CONSUME R NOTICED THAT SMOKE WAS COMING INSIDE OF VEHICLE VENTS. HE WAS ABLE TO PULL OVER TO THE SHOULDER, AND VEHICLE WAS ON FIRE. *AK | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. |
| Engine And Engine Cooling | 00.0%No examples available for this selection. | 110.0%ODI 10196263 · 63,000 miTL*THE CONTACT OWNS A 1994 JAGUAR XJ12. THE CONTACT STATED THAT THE VEHICLE DEVELOPED A LEAK IN THE COOLANT EXPANSION TANK ALONG THE SEAM WELD. WHILE DRIVING 55 MPH, THE RADIATOR FLUID LEAKED AND THE VEHICLE OVERHEATED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED. RECALL SERVICE # 5451 WAS FOUND ON AUTOZONE.COM (ALLDATA). THE DEALER WILL DIAGNOSE THE FAILURE ON JULY 13, 2007, PER THE RECALL NOTICE. THE PURCHASE DATE WAS UNAVAILABLE. THE CURRENT MILEAGE IS 71,000 AND FAILURE MILEAGE WAS 63,000. | 00.0%No examples available for this selection. |
| Engine And Engine Cooling:Cooling System | 00.0%No examples available for this selection. | 110.0%ODI 480028VEHICLE STUCK IN PARK POSITION THREE TIMES, ALSO INTERMITTENTLY FAILS TO START IN PARK GEAR. | 00.0%No examples available for this selection. |
| Engine And Engine Cooling:Engine | 00.0%No examples available for this selection. | 110.0%ODI 852785THIS IS A 12 CYLINDER ENGINE WITH ONLY 6 CYLINDERS WORKING. THIS CAUSED UNBURNED FUEL AND AIR TO BE PUMPED INTO THE FUEL EXHAUST SYSTEM, WHICH THEN OVERHEATED THE CATALYTIC CONVERTER AND STARTED A FIRE. DEALER HAS BEEN CONTACTED. *AK | 00.0%No examples available for this selection. |
Darker cells indicate a larger share of submitted complaints. Components overlap. This measures complaint composition, not failure probability.
Failure mileage by component
Median and middle 50% of usable owner-reported mileages. Ranges require at least five records.
| Component | Mileage range (25th–75th percentile) | Median | Usable records | Examples |
|---|---|---|---|---|
| No usable records for this analysis. | ||||
Complaint and recall timeline
Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.
Solid line: filed complaints. Dashed amber lines: recall announcement dates for this vehicle selection; markers include all recall components. The latest month is partial. Temporal proximity does not establish causation.
Monthly counts, recall campaigns and complaint examples
| Month | Complaints | Campaigns announced | Examples |
|---|---|---|---|
| 2024-11 | 0 | None | No examples available for this selection. |
| 2024-12 | 0 | None | No examples available for this selection. |
| 2025-01 | 0 | None | No examples available for this selection. |
| 2025-02 | 0 | None | No examples available for this selection. |
| 2025-03 | 0 | None | No examples available for this selection. |
| 2025-04 | 0 | None | No examples available for this selection. |
| 2025-05 | 0 | None | No examples available for this selection. |
| 2025-06 | 0 | None | No examples available for this selection. |
| 2025-07 | 0 | None | No examples available for this selection. |
| 2025-08 | 0 | None | No examples available for this selection. |
| 2025-09 | 0 | None | No examples available for this selection. |
| 2025-10 | 0 | None | No examples available for this selection. |
| 2025-11 | 0 | None | No examples available for this selection. |
| 2025-12 | 0 | None | No examples available for this selection. |
| 2026-01 | 0 | None | No examples available for this selection. |
| 2026-02 | 0 | None | No examples available for this selection. |
| 2026-03 | 0 | None | No examples available for this selection. |
| 2026-04 | 0 | None | No examples available for this selection. |
| 2026-05 | 0 | None | No examples available for this selection. |
| 2026-06 | 0 | None | No examples available for this selection. |
| 2026-07 | 0 | None | No examples available for this selection. |
| 2026-08 | 0 | None | No examples available for this selection. |
| 2026-09 | 0 | None | No examples available for this selection. |
| 2026-10 (partial) | 0 | None | No examples available for this selection. |
Emerging complaint spikes
Complete months in the latest six months with at least 10 complaints, at least twice the preceding 12-month average, and at least three square-root deviations above that average.
This is a descriptive screening rule, not a statistical defect finding. Publicity and reporting changes can increase submissions.
No complete months meet the spike thresholds for this selection.
Equal-age model-year comparison
Model-wide cumulative reports during the first three or five calendar years, starting with the model year (age 0). Only fully elapsed windows are compared.
1994: 1 complaints · 1996: 1 complaints
| Model year | Through age 0 | Through age 1 | Through age 2 |
|---|---|---|---|
| 1994 | 0 | 1 | 1 |
| 1996 | 0 | 1 | 1 |
Date coverage across each selected cohort
| Year | Incident dates used | Filing date fallbacks | Excluded dates |
|---|---|---|---|
| 1994 | 6 | 4 | 0 |
| 1996 | 1 | 0 | 0 |
Incident date is preferred when valid and no later than filing; otherwise filing date is used. Model year approximates age. Equal observation time does not adjust for sales, distance driven or reporting delays. One complaint linked to multiple model years can appear in each cohort.
Components reported together
Each cell counts unique complaints naming both components. Open a nonzero cell for examples.
| Component | Tires:Tread/Belt |
|---|---|
| Tires:Tread/Belt | — |
Co-reporting does not establish that one component caused another concern.
Recurring narrative patterns
Specific keyword mentions beyond broad component labels. Matching includes negations and comparisons and does not confirm a diagnosis.
0 patterns with matching reports.
No narratives match the published patterns.