To estimate the price of the 2021 Hyundai Creta I4 1.5L GL (Mid), I first considered the most relevant selling price data. The closest match is the 2023 Hyundai Creta I4 1.5L GL (Mid) with 17500 km sold for 59000 SAR on 2024-09-30. This car is newer and has lower mileage, so the 2021 model with 31000 km should be valued slightly lower. The 2023 Hyundai Creta I4 1.5L (Top) with 17000 km sold for 60000 SAR on 2024-05-20, indicating that the GL (Mid) variant is slightly less valuable. The 2020 Hyundai Creta I4 1.5L (Top) with 52000 km sold for 52000 SAR on 2024-01-16, suggesting depreciation over time. Considering these factors, I estimate the 2021 model's price slightly below the 2023 GL (Mid) sale price, accounting for the older model year and higher mileage.