To estimate the price of the 2021 Changan Eado I4 1.6L Turbocharged Smart (Mid) with 134613 km mileage, I first looked at the selling prices of similar cars. A 2021 Changan Eado I4 1.6L Limited (Top) with 146000 km sold for SAR 32500 in May 2024, and a 2022 Changan Eado I4 1.4L Limited (Top) with 92000 km sold for SAR 39000 in December 2023. Given that the target car is a mid-trim and in average condition, its value should be lower than these top-trim models. Next, I reviewed listed prices: a 2021 Changan Eado I4 1.6L Turbocharged Smart (Mid) with the same mileage is listed for SAR 35000, and a 2020 Changan Eado I4 1.6L GDI Trend (Base) with 127000 km is listed for SAR 34000. Considering the target car's average condition and the fact that listed prices are generally higher than selling prices, I adjusted the estimate downwards. Factoring in the depreciation and the condition, I arrived at a final estimate.