Everybody is probably scratching their head and wonders where in the world did the number 45 come in to play for the CLA coupe. Is it because the engine is 4.5 liters and its a V8! Nope. Is it because the new Mercedes CLA is 450 horsepower? Close but no. So the designer has issue and want to change things up cause they wanted to be different... no! So what is it? Anybody?