To estimate the price of the 2013 FIAT Linea I4 1.4L Standard with 224000 km mileage in average condition, I first considered the actual selling price of a similar car sold on 2024-08-18 for SAR 13000. This is the most reliable data point. Next, I looked at an offer accepted by a seller for a similar car with 220000 km mileage for SAR 12000 on 2024-08-15. This suggests a slightly lower market value. Additionally, I reviewed listed prices of similar cars, which were around SAR 13000 but not necessarily sold at that price. Given the selling price and the accepted offer, I estimate the market price to be slightly below the selling price but above the accepted offer.