To estimate the price of the 2021 Mercedes C300 I4 2.0L Turbocharged Standard coupe with 120500 km mileage, I considered the following data points: The new car price for a 2025 Mercedes C300 Standard Convertible is SAR 288500. Applying a 10% annual depreciation for 3 years (2021 to 2024), the estimated value is SAR 216000. For offers accepted by sellers, a 2019 Mercedes C300 Standard coupe with 176000 km was accepted at SAR 130000 in October 2023. Adjusting for the mileage difference, the 2021 model should be valued higher. Another 2019 C300 Top sedan with 70000 km had an offer accepted at SAR 115500 in March 2024. Considering the body type and trim differences, the coupe should be valued higher. The listed price for a similar 2019 C300 Top sedan with 70000 km is SAR 132500, which is generally higher than the actual selling price. Combining these data points, the estimated market price for the 2021 Mercedes C300 Standard coupe is calculated.