As stylish and elegant as its predecessors, the Jaguar XJ8 arrived in the late 90s with the same luxurious appeal and a lighter, aluminum body. It also had the classic leather and wood-trimmed interior. The vehicle also has features like the universal remote transmitter for security, memorization of settings for up to three drivers, and electronic brake force distribution among many others. Despite these nifty modifications, however, there had been some common problems car owners encountered with the XJ8, and the list below shows some of them.
Jaguar XJ8 owners have complained about the vehicle's engine and the engine's cooling system. The Jaguar XJ8 base trim line had an 8-cylinder, 4.0-L engine. There had been incidents, according to them, that the vehicle suddenly stalled without prior warning, and it occurred mostly at highway speeds around 60 to 70 mph. This problem was common on the 1998 model of the XJ8, although it was not a critical issue the following years. There had been no official statement or recall from Jaguar regarding the engine issues of the vehicle.
Another critical problem of the Jaguar XJ8 was its fuel system. The problem had originated from the fuel filter's connector because the o-ring wasn't seated correctly on the fuel line. Thus, the inadequate sealing has resulted to a fuel leak. There had been 88,303 units of the 1998 XJ8 model on record that were said to have been affected by this problem.
A recall in 2006 had solved the issue as the fuel filters of the vehicles, along with the other parts, have been replaced free of charge.
Other problems with the Jaguar XJ8 were the vehicle's suspension and automatic transmission system. The suspension system of the vehicle sometimes gets "too low" and the warning device suddenly lights up, alarming the driver even at high speeds. With the automatic transmission system, there are instances wherein the transmission fluid begins to leak due to a faulty output flange and seal. Some owners brought their vehicles to the dealership to have their cars fixed, while others opted to have their car fixed in a repair shop instead to lessen the possible cost due to expensive Jaguar XJ8 parts.