To estimate the price of the 2019 Lincoln Navigator V6 3.5L Twin Turbocharged Presidential with 127000 km mileage, I started by looking at the new car prices for the 2025 model, which range from SAR 391000 to SAR 416000. Assuming a 10% depreciation per year, the 2019 model would have depreciated for 5 years. The depreciation factor is 0.9^5, which is approximately 0.59. Applying this to the new car price range, the estimated value for a 2019 model would be between SAR 230690 and SAR 245440. Next, I considered the listed prices of similar cars: a 2019 model with 100500 km listed for SAR 260000 and a 2020 model with 9000 km listed for SAR 250000. Given the higher mileage of the car in question, I adjusted the estimate downward. Combining these factors, I arrived at a final estimate.