To estimate the price of the 2019 Mercedes E450 V6 3.0L Twin Turbo with 82000 miles, I started by looking at the listed price of a similar 2021 Mercedes E450 V6 3.0L with 37000 miles, which is SAR 225500. Given that the 2021 model has significantly lower mileage and is newer, I adjusted for depreciation and mileage. Assuming a 10% annual depreciation, the 2021 model would have depreciated by approximately 20% over two years, bringing its value down to around SAR 180400. Additionally, the higher mileage of the 2019 model would further reduce its value. Considering these factors, I estimated the price of the 2019 model accordingly.