This Audi A4 TDI S line from 2007 offers a compelling blend of style and efficiency, boasting an impressive fuel economy of 49 miles per gallon. As a 2.0 litre diesel, this S line variant presents a sporty yet economical choice for discerning drivers. The low CO2 emissions of this Audi A4 TDI S line further enhance its appeal, indicating a more environmentally conscious performance. This combination of a strong 2.0 litre diesel engine and excellent fuel efficiency makes it a stand out option in its class.