To estimate the price of the 2018 BMW 520 Twin Turbo I4 2.0L M Sport, I first considered the selling prices of similar cars. A 2018 BMW 520 M Sport with good condition and 160,000 km mileage sold for AED 69,000 on 22 Feb 2024. This car is similar in variant but has higher mileage than the target car. A 2020 BMW 520 with good condition and 35,000 km sold for AED 133,500 on 1 Sep 2024, but it is newer and has lower mileage. For listed prices, a 2018 BMW 520 Standard with 82,500 km was listed for AED 113,000, and another with 60,700 km was listed for AED 108,500. These listings are higher than the selling price, indicating a market trend. Considering the target car's mileage of 73,400 km and its M Sport variant, which typically commands a premium, I adjusted the estimate slightly above the selling price of the similar 2018 M Sport model but below the high listing prices, accounting for the lower mileage and good condition.