The most relevant data point is the selling price of a similar 2019 BMW X6 M V8 4.4L Twin Power Turbo with 66000 km mileage, which sold for SAR 250000 in March 2024. The car to be estimated has a higher mileage of 79925 km, which typically reduces the value slightly. The listed price for a similar 2019 model with the same mileage is also SAR 250000, indicating that the market price has not changed significantly since the sale. Considering the condition of the car to be estimated is 'Good' compared to the 'Average' condition of the sold car, this could slightly offset the higher mileage. Therefore, the estimated market price should be slightly lower than SAR 250000 due to the higher mileage but not significantly lower due to the better condition.