To estimate the price of the 2013 Audi A6 I4 2.0L Turbocharged TFSI (Mid) with 79000 km mileage, I first considered the selling prices of similar cars. The closest match is a 2013 Audi A6 I4 2.0L with 128000 km, sold for 38500 SAR on 2024-05-05. This car is a base variant, and the target car is a mid variant with significantly lower mileage, suggesting a higher value. Another 2013 Audi A6 I4 2.0L with 144000 km sold for 26000 SAR on 2023-06-12, but it has higher mileage and is a base variant, indicating the target car should be valued higher. A 2013 Audi A6 FSI Quattro V6 2.8L with 172000 km sold for 37000 SAR on 2024-07-21, but it is a different engine and variant. Considering the target car's lower mileage and mid variant, I estimate its price to be higher than the 38500 SAR of the base variant with higher mileage.