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What 7 owners told NHTSA about the 2015 Jaguar Xj (swb)
These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.
2 of 7 complaints match · Brakes · clear filters
Feb 8, 2021Transmission & drivetrainBrakes
MY 2015 JAGUAR XJ , WHICH WAS IN PARK GEAR - WITH ENGINE RUNNING, STARTED ROLLING BACK ON THE DRIVEWAY IN A DANGEROUS AND UNEXPLAINED FASHION AND ALMOST HIT MY KIDS AND I. THERE WAS NO-ONE IN THE CAR, AND I WAS ABLE TO BRING THE CAR TO A STOP BY JUMPING IN AND SLAMMING THE BRAKES. THE CAR WAS ROLLING, NOT SLIDING. THE SURVEILLANCE CAMERA CAUGHT THIS SCARY MOMENT AND YOU CAN VIEW THAT AT THE LINK BELOW HTTPS://DRIVE.GOOGLE.COM/FILE/D/1_NFUQM9JZBIFLLVDKF7-H5YU2OD6OO0F/VIEW?USP=DRIVESDK
NHTSA ODI 11395148
Sep 2, 2020Speed controlBrakes
TL* THE CONTACT OWNS A 2015 JAGUAR XJ. THE CONTACT STATED THAT WHILE HIS WIFE WAS DRIVING APPROXIMATELY 20 MPH, THE VEHICLE INDEPENDENTLY ACCELERATED TO APPROXIMATELY 50-60 MPH. THE CONTACT STATED THE DRIVER APPLIED THE BRAKES HOWEVER, THE BRAKES FAILED TO STOP THE VEHICLE. THE DRIVER KEPT THE BRAKE PEDAL DEPRESSED UNTIL THE VEHICLE FINALLY CAME TO A STOP. THE CONTACT WAS UNSURE IF THERE WERE ANY WARNING LIGHTS ILLUMINATED. THE CONTACT HAD NOT CONTACTED THE DEALER. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 34,900.
NHTSA ODI 11352735
Working with the data? Download all 7 complaints as CSV · fetched from NHTSA July 24, 2026
How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your
pre-purchase inspection list. Back to the
full 2015 Jaguar Xj (swb) verdict →