To estimate the price of the 2018 Mercedes GLS500 V8 4.7L Twin Turbo with 181000 km mileage, I first looked at the selling price of a similar 2017 model with 145054 km mileage, which sold for SAR 153000 in September 2023. Given the one-year difference and higher mileage, I adjusted the price downwards. Next, I considered the listed prices of similar cars: a 2018 model with 181000 km listed for SAR 174500, and another 2018 model with 183000 km listed for SAR 160000. These listings are higher than the selling price, so I adjusted downwards. I also noted a 2016 model with 156000 km listed for SAR 133000 and a 2017 model with 145054 km listed for SAR 165500. Considering the depreciation and higher mileage, I estimated the market price accordingly.