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What 7 owners told NHTSA about the 2012 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.

All (7)Crash / fire / injury (1)Engine (3)Fuel system (2)Body & structure (1)Brakes (1)Electrical system (1)Latches & locks (1)Visibility & wipers (1)

2 of 7 complaints match · Fuel system · clear filters

Nov 1, 2021EngineFuel system

The engine has issues where there is a jerk while accelerating at times. I was told of a misfire issue that Jaguars have and have not been corrected. I was driving my 2012 Jaguar XJ on the interstate when it started slowing down. The engine light than appears on the dash and it starts to jerk as I try to speed up to get off the highway it goes from 60mph to 45mph. I take my foot off the gas and press the gas again for the car to jerk and accelerate slowly back up to 60mph. Not only was I almost hit from behind but almost crashed trying to get over and off the road for my safety and others. I was told by a mechanic the car needed a new gas treatment, fuel cap, and tune up all this money paid and no results. The 2012 Jaguar xj still stalls when accelerating. The buttons are melted into a gummy substance and a barely used sunroof wont close has a loud noise when button is touched to try and close it. Worse experience ever with my 1st and last 2012 Jaguar XJ.

NHTSA ODI 11438987

Jun 8, 2021Fuel systemFire

The contact owns a 2012 Jaguar XJ. The contact stated that when the vehicle was started, the vehicle stalled. The contact performed a diagnostic himself and found that the fuel pump wires were melted and caused the wires to fuse together and caused a short circuit. The contact replaced the fuel pump. The vehicle was repaired. The manufacturer was not contacted. The failure mileage was 67,894.

NHTSA ODI 11420105

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 2012 Jaguar Xj (swb) verdict →