I started by examining the selling prices of similar cars. The first car, a 2015 Mercedes GL500 V8 4.6L with 96000 km, sold for 135000 SAR in December 2023. The second car, a 2015 Mercedes GL500 V8 4.7L Twin Turbo with 108500 km, sold for 98449 SAR in October 2024. The car to be estimated is a 2015 Mercedes GL500 V8 4.7L Twin Turbo with 117817 km. Given its higher mileage compared to the second car, its value should be slightly lower than 98449 SAR. Next, I looked at the listed prices. A similar car with 108500 km is listed for 95500 SAR, and another with 135100 km is listed for 135000 SAR. Considering these data points, the estimated market price should be slightly below 98449 SAR due to higher mileage and the recent selling price trend.