To estimate the price of the 2018 Kia Carnival I4 2.2L Turbocharged GDI EX (Mid), I analyzed the listed prices of similar cars. The closest match is the 2019 Kia Carnival I4 2.2L Turbocharged GDI EX (Mid) with 152,000 km, listed for SAR 66,000. Considering the 2018 model is a year older, I expect a slightly lower price. The 2020 model of the same variant with 93,303 km was listed for SAR 72,000, indicating a higher price due to being newer and having lower mileage. The 2017 Kia Carnival I4 2.2L GDI L (Base) with 106,000 km was listed for SAR 60,500, suggesting a lower price for older models and base variants. Given these data points, I estimate the 2018 model's market price to be slightly below the 2019 model's listing, around SAR 63,000.