Ly claims it's unsurprising that the GMC Yukon XL has a high depreciation rate. The Yukon XL is ... a common livery vehicle, so its high mileage likely brings down its price.The Lincoln Navigator L is a common livery vehicle, so its resulting high mileage likely has a negative effect on its resale value, Ly said.Although it has an abundance of cargo space, the Lincoln MKT has drawn criticism for its styling, so its low resale value is likely due to buyers favoring other vehicles in the highly competitive midsize SUV segment, Ly said.