To estimate the price of the 2016 Mazda 6 I4 2.5L S (Base) with 329,000 km mileage and average condition, I first considered the selling prices of similar cars. A 2016 Mazda 6 S (Base) with 205,399 km sold for 38,000 SAR on 21 Oct 2024, and another with 222,000 km sold for 28,000 SAR on 30 Jun 2024. These cars have lower mileage than the target car, suggesting a lower price for the target. A 2016 Mazda 6 Core (Base+) with 175,000 km sold for 37,500 SAR on 10 May 2024, indicating higher prices for higher trims. The listed prices show a 2016 S (Base) with 347,000 km at 33,500 SAR, and another with 267,215 km at 45,000 SAR, but these are higher than typical selling prices. Considering the higher mileage and average condition of the target car, I estimate its market price to be lower than the 38,000 SAR selling price of a similar car with less mileage.