To estimate the price of the 2017 Hyundai Elantra I4 2.0L GL (Mid) with 213000 km mileage, I first looked at the selling prices of similar cars. A similar car with 217000 km sold for SAR 35000 on 2024-05-30, and another with 203000 km sold for SAR 29000 on 2024-06-25. Given the similar mileage and specs, the first car's price is more relevant. Next, I reviewed listed prices: a car with the same specs and mileage is listed for SAR 39500, another with 217000 km for SAR 39000, and another with 204600 km for SAR 42000. These listed prices are generally higher than selling prices. Considering the average condition of the target car and the most recent selling prices, I adjusted the estimate slightly lower than the highest selling price but higher than the lowest, reflecting the car's average condition and market trends.