To estimate the price of the 2023 Chevrolet Groove I4 1.5L LT (Base) with 1800 km mileage, I first looked at the selling prices of similar cars. The most relevant data point is a car of the same variant and mileage sold for SAR 55500 on 2024-05-31. This is the most recent and directly comparable sale. Other selling prices include a Premier variant with 21000 km sold for SAR 44000 and another Premier variant with 18000 km sold for SAR 50500. These are less relevant due to different variants and higher mileage. For listed prices, the closest match is a car with the same variant and mileage listed for SAR 55500, which supports the selling price data. Other listings include a car with 29 km listed for SAR 68000, a car with 4500 km listed for SAR 53000, and a car with 24000 km listed for SAR 45000. These listings are less relevant due to different mileages and the tendency for listed prices to be higher than actual selling prices.