To estimate the price of the 2021 BMW X7 xDrive 40i I6 3.0L Twin Power Turbo xDrive 50i (Top) with 79000 km mileage, I considered the following data points: 1. Selling prices: A 2022 BMW X7 xDrive 50i (Top) with 6000 km sold for SAR 232700 in January 2024, and a 2019 BMW X7 xDrive 50i (Top) with 95000 km sold for SAR 209000 in March 2024. 2. Listed prices: A 2021 BMW X7 xDrive 50i (Top) with 79000 km is listed for SAR 285000, and a 2022 BMW X7 xDrive 50i (Top) with 27000 km is listed for SAR 380000. 3. Depreciation: Considering the car is 3 years old, a 10% annual depreciation is applied. The new car price for a similar model is not provided, but using the selling prices and listed prices, I estimated the market value. The selling prices are more reliable, so I gave them more weight in my estimation.