The car to be estimated is a 2019 BMW X5 xDrive 50i V8 4.4L Twin Power Turbo with 192,000 km mileage. The closest match in the listings is a 2019 BMW X5 V8 4.4L Twin Power Turbo, Variant: xDrive 50i (Top), with 102,000 km listed for SAR 192,000. Given the higher mileage of the car to be estimated, we need to adjust the price downwards. Other 2019 BMW X5 xDrive 40i (Mid) variants with lower mileage (132,000 km and 117,132 km) are listed for SAR 175,000 and SAR 160,000 respectively. Considering the higher trim and engine size of the xDrive 50i, it should be valued higher than these 40i variants. However, the high mileage of 192,000 km is a significant factor, suggesting a further reduction. A reasonable estimate considering these factors would be around SAR 150,000.