To estimate the price of the 2023 Audi Q7 V6 3.0L Twin Turbo 55 TFSI (Top) with 15000 km mileage, I considered the following data points: The new car price for the 2024 Audi Q7 55 TFSI quattro S-line (340 HP) is SAR 408820. Given that the car is a 2023 model, I applied a 10% depreciation for one year, resulting in an estimated value of SAR 367938. The listed prices of similar cars include a 2023 Audi Q7 V6 3.0L Twin Turbo 55 TFSI (Top) with the same mileage listed for SAR 287500, and a 2022 model with 19500 km listed for SAR 275000. Considering the depreciation and the listed prices, I estimated the market price to be slightly lower than the new car's depreciated value but higher than the listed prices due to the car's good condition and low mileage.