To estimate the price of the 2022 Mazda 6 I4 2.5L S (Base) with 158500 km mileage, I first considered the selling prices of similar cars. The 2023 Mazda 6 I4 2.5L S (Base) with 20000 km sold for 81000 SAR in September 2024. This car is newer and has significantly lower mileage, so it would be valued higher. The 2020 Mazda 6 I4 2.5L with 160000 km in average condition sold for 64000 SAR and 65000 SAR, but these were higher trims (Signature). The 2020 Mazda 6 I4 2.5L with 138000 km in average condition sold for 69000 SAR, but it was a higher trim (Ignite). The listed price for a 2022 Mazda 6 I4 2.5L S (Base) with 114000 km is 73000 SAR, but this is a listing price, not a selling price. Considering the car's age, mileage, and condition, and comparing it to the selling prices of similar cars, I estimate the market price to be slightly lower than the listed price due to higher mileage and average condition.