What does Audi 40 mean?

What does Audi 40 mean?

What are Audi's new badges?

Badge number	Power output
30	81kW to 91kW (107hp to 127hp)
35	110kW to 120kW (145hp to 159hp)
40	125kW to 150kW (165hp to 198hp)
45	169kW to 185kW (223hp to 244hp)