Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 1 of 10 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
Engine And Engine Cooling. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Service Brakes, Hydraulic. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Vehicle Speed Control. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
0 crash reports2 fire reports0 injury reports
What owners actually said
10 reports
63,000 miles · Jul 13, 2007
Engine And Engine Cooling
TL*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 (ALLDA…
Read full complaint
TL*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.
NHTSA ODI #10196263
Mileage unknown · May 10, 2001
Suspension
THE SELF-LEVELING SUSPENSION SYSTEM FAILED. ACCORDING TO THE DEALERSHIPS, THERE IS NOT A REMEDY FOR THIS FAILED SYSTEM OTHER THAN TO REPLACED IT WITH THE SAME SYSTEM. JAGUAR MADE REPLACEMENTS KITS FOR THE XJ6 BUT NOT FOR THE XJ12
NHTSA ODI #9002290
Mileage unknown · Jun 8, 2000
Electrical SystemFire
IGNITION FAILURE RESULTED IN VEHICLE FIRE, POSSIBLY RELATED TO THE FAULTY DESIGN OF THE MARELLI IGNITION SYSTEM. *MJS
NHTSA ODI #784081
Mileage unknown · Nov 10, 1999
Engine And Engine CoolingFire
THIS 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
NHTSA ODI #852785
Mileage unknown · Apr 10, 1999
Service Brakes, HydraulicVehicle Speed Control
CRUISE CONTROL LOCKED UP -- CAR CONTINUED TO ACCELERATE -- BRAKES INOPERATIVE AGAINST A 300 HP ENGINE -- CONDITION CORRECTED WHEN CRUISE TURNED OFF. *AK
NHTSA ODI #705495
Mileage unknown · Mar 1, 1999
Electrical System
VEHICLE FAILS TO START WITH TURN OF KEY. AFTER SEVERAL ATTEMPTS IT WILL START.
NHTSA ODI #781989
Mileage unknown · Feb 22, 1999
Engine And Engine Cooling
VEHICLE CONTINUES TO EXPERIENCE ENGINE FAILURES, HYDRAULIC RESERVIOR LEAKING ON ONE REPAIR.
NHTSA ODI #544009
Mileage unknown · Mar 3, 1998
Vehicle Speed Control
THROTTLE STICKING SO THAT THE CAR WILL CONTINUE TO GO FORWARD WHEN BRAKE APPLIED.
NHTSA ODI #531715
Mileage unknown · Feb 27, 1998
Service Brakes, HydraulicVehicle Speed Control
MADE A LEFT TURN, ATTEMPTED TO STOP WITH FOOT ON BRAKE, BACK WHEELS SPUN AND SMOKED. THROTTLE STUCK AND WOULD NOT RELEASE. ALMOST STANDING, HOLDING FOOT ON BRAKE. FINALLY RELEASED BRAKE AND CAR SLOWED DOWN. *AK
NHTSA ODI #821736
Mileage unknown · Jan 31, 1995
Engine And Engine CoolingFuel System, GasolinePower Train
OXYGEN SENSOR RELAY FAILED, RESULTING IN VEHICLE NOT STARTING.
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE HOOD LINER CAN SAG AND INTERFERE WITH THE THROTTLE LINKAGE.
Consequence & remedy
Consequence: THIS CONDITION CAN CAUSE HIGH ENGINE IDLE SPEED, INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL REPAIR THE HOOD LINER.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
3
EA98022 · Throttle HANG-UP
Opened Sep 30, 1998 · Closed Oct 30, 1998
Status: closed (inferred from source dates) · Vehicle Speed Control:linkages
ALLEGED THAT THE HOOD LINER INTERFERES WITH THROTTLE LINKAGE OPERATION. ENGINE CONTROL MAY BE COMPROMISED
PE98016 · Throttle HANG-UP
Opened Mar 13, 1998 · Closed Sep 30, 1998
Status: closed (inferred from source dates) · Vehicle Speed Control:linkages
ALLEGED THAT SOME 1993-94 MY XJ12 SEDAN VEHICLES MAY EXPERIENCE UNINTENDED ELEVATED ENGINE SPEED
DP98002 · Throttle Sticking
Opened Mar 5, 1998 · Closed Mar 16, 1998
Status: closed (inferred from source dates) · Vehicle Speed Control:linkages
THE NHTSA WAS PETITION TO COMMENCE A DEFECT INVESTIGATION OF THE SUBJECT VEHICLES ON 26-FEB-98.THE PETITION ALLEGES THAT THE THROTTLE STICKS ON HIS CAR AND IT CONTINUES TO GO FORWARD WITH A HIGH SPEED EVEN THE BRAKE IS APPLIED. A PRELIMINARY EVALUATION (PE98-016) IS OPENED RESULTING FROM THIS PETITION
1994 Jaguar XJ12 Problems, Complaints & Recalls | Skip That Year
Illustration