This 2007 Audi A4 TDI S line offers an exceptional blend of performance and efficiency, boasting an impressive fuel economy of 49 miles per gallon. As a TDI S line model, it features the sporty S line trim, enhancing its already sophisticated appearance. Under the bonnet, a capable 2.0 litre diesel engine provides a responsive driving experience, making it a practical choice for both daily commutes and longer journeys. The low CO2 emissions of this Audi A4 are a significant advantage, indicating a more environmentally conscious and potentially more cost effective ownership experience compared to many other vehicles in its class. This combination of strong fuel economy and reduced emissions, coupled with the desirable S line specification, makes this A4 a compelling option for those seeking a premium yet economical car.