To estimate the price of the 2019 Mazda CX-5 I4 2.5L Signature (Top) with 161500 km mileage, I first considered the selling prices of similar cars. A 2019 CX-5 Signature with 40000 km sold for 88000 SAR in March 2024. Adjusting for higher mileage and average condition, the value would decrease. A 2021 Signature with 74000 km sold for 97000 SAR in February 2024, indicating a higher value for newer models. The 2018 CX-5 R variant with 149650 km sold for 58000 SAR in October 2023, suggesting a lower value for older and mid-variant models. The listed price for a 2019 Signature with 211000 km is 61000 SAR, which is likely higher than the market value. Considering these data points, the estimated market price for the target car, accounting for its mileage and condition, is around 70000 SAR.