The Mercedes-Benz CLA-Class is a series of subcompact executive cars manufactured by . the Tesla Model S with Cd=0.24. The CLA 180 CDI Blue Efficiency was claimed to be even more aerodynamic with a Cd=0.22. .. automatic 7G-TRONIC). CLA 220 CDI 4MATIC, 09/2014–12/2018, 7-speed automatic 7G-TRONIC...