Jaguar XJL
On average, the Jaguar XJL loses as much as 66.4% of its value within the first three years of ownership. While Jaguar is one of the well-known luxury brands, their cars tend to lose their value accordingly.
BMW 6 Series
In terms of a luxury car, the BMW 6 Series is a bit odd since it was available as a coupe, a convertible, or as a four-door sedan for years. Its loss value is just a little bit worse than the 5 Series. On average, the BMW 6 Series loses 68.3% of its value.