No, the title was not a typo. JLR has lost roughly $4 billion during the fourth quarter of 2018. So, what was the reason for this loss? It was three things really; diesel cars, China, and Brexit.
However, the biggest reason of those three is diesel cars. JLR's diesel cars account for just under 90% of Jaguars sales in Europe. With the environmental car push and all of the diesel scandals among other manufacturers, it is easy to see why consumers are spending less and less on diesel cars. However, Jaguar is starting to push electric cars. They just need to speed up the process so they don't keep throwing money away.