It's classified as a concept from Audi. But can you imagine a luxury vehicle getting 59 mpg, and just think if this comes out to the public, will the other rivals follow suit?!?! Imagine a 3 series gettin 50+ mpg or a MB getting 60-70 mpg b/c they lead the diesel tech.
Audi A4 TDI Concept e Achieves 59 MPG! - Carscoop