To estimate the price of the 2018 Audi Q7 TFSI I4 2.0L Turbo Charged 55 TFSI (Top) with 124000 km mileage, I considered the following data points: 1. A 2019 Audi Q7 I4 2.0L Turbo Charged 55 TFSI (Top) with 136000 km sold for 105000 SAR on 2024-04-19. 2. A 2016 Audi Q7 V6 3.0L 55 TFSI (Top) with 153000 km sold for 95000 SAR on 2024-03-23. 3. A 2018 Audi Q7 45 TFSI Quattro V6 3.0L Twin Turbo (Base) with 112000 km sold for 123500 SAR on 2024-01-22. 4. A 2018 Audi Q7 45 TFSI Quattro V6 3.0L Twin Turbo S-Line (Mid) with 109200 km sold for 115000 SAR on 2024-04-21. 5. A 2018 Audi Q7 V6 3.0L supercharged 45 TFSI S-Line (Mid) with 55185 km sold for 135000 SAR on 2023-11-29. Considering the closest match in terms of variant and mileage, the 2019 model sold for 105000 SAR is the most relevant. Adjusting for the slightly lower mileage and the fact that the car is a year older, I estimate the price to be slightly lower.