I started by looking at the selling prices of similar cars. The most relevant data point is the 2013 Hyundai Elantra I4 1.8L GLS (Top) with 295000 km mileage, sold for 26500 SAR on 2023-11-22. This car is very similar in terms of year, engine, variant, and condition, but has slightly lower mileage. Another relevant data point is the 2013 Hyundai Elantra I4 1.6L GLS (Top) with 134500 km mileage, sold for 29000 SAR on 2024-06-22. This car has a smaller engine but much lower mileage. Considering the higher mileage of the target car (311682 km), I adjusted the price downwards. The listed price of a similar car with 295000 km mileage was 26500 SAR, but it was delisted, indicating it might not have sold at that price. Taking all these factors into account, I estimated the market price by slightly reducing the price from the most similar sold car with higher mileage.