To estimate the price of the 2019 Lincoln Navigator V6 3.5L Presidential (Top) with 100500 km mileage, I started by looking at the new car prices. The 2025 model of the same variant is priced at SAR 391000. Assuming a 10% depreciation per year, the 2019 model would have depreciated for 6 years, resulting in a depreciation of approximately 60%. This gives an estimated value of SAR 156400. Next, I considered the listed prices of similar cars. A 2019 model with 127000 km is listed for SAR 163500, and a 2020 model with 9000 km is listed for SAR 250000. Given the higher mileage of the 2019 model in the listings, I adjusted the price downwards. Combining these data points, I arrived at an estimated market price for the car.