To estimate the price of the 2019 Mercedes C200 I4 2.0L Turbocharged Top with 54300 km mileage, I first looked at the selling prices of similar cars. The closest match is the 2017 Mercedes C200 I4 2.0L Turbocharged Top with 60000 km sold for 80000 SAR in February 2024. Considering the 2-year difference and the lower mileage, the 2019 model should be valued higher. The 2020 Mercedes C200 I4 2.0L Turbocharged Standard with 66000 km sold for 112500 SAR in February 2024, indicating a higher value for newer models. The listed prices for 2019 models with similar specs range from 135000 to 150000 SAR, but these are often higher than actual selling prices. Factoring in the average condition and the market trend, I adjusted the price downwards from the listed prices but higher than the 2017 model's selling price.