To estimate the price of the 2017 Mercedes S400 V6 3.0L Twin Turbo with 165500 km mileage, I first considered the selling prices of similar cars. A 2017 model with 94000 km sold for 108000 SAR in February 2024, and a 2016 model with 133000 km sold for 164500 SAR in March 2024. The 2016 model with 115000 km sold for 164000 SAR in April 2024. These prices suggest a range for similar cars. The 2015 model with 160000 km sold for 169000 SAR in June 2023, indicating a higher price for older models with similar mileage. The listed prices for 2017 models range from 145000 SAR to 225000 SAR, but these are generally higher than selling prices. Considering the higher mileage of the target car and the average condition, I estimate the market price to be slightly lower than the 2017 model sold for 108000 SAR, adjusting for the higher mileage and time since the last sale.