The car to be estimated is a 2015 Ford Expedition XLT V6 3.5L EL XLT (Base+) with 279,000 km mileage in average condition. The most relevant data point is a 2015 Ford Expedition XLT V6 3.5L Twin Turbo EL XLT (Base+) with 165,250 km sold for 59,500 SAR on 2024-08-12. Considering the higher mileage of the target car, a depreciation adjustment is necessary. A 2014 Ford Expedition EL XLT (Base+) with 354,500 km sold for 29,000 SAR on 2023-07-20, indicating a significant depreciation with high mileage. A 2016 model with similar specs but better condition sold for 61,000 SAR on 2024-03-17. Given the target car's higher mileage and average condition, the estimated price should be lower than the 2015 model with lower mileage and similar condition. Considering these factors, the estimated market price is adjusted to reflect the higher mileage and average condition.