Bud.

I am fairly sure the letter 'A' refers to automatic. Sometimes the
635 is called CSIa for this reason, usually in US markets.

Cheers,
Mark.

--- In bmwe24club@y..., "budowb3" <budowb3@a...> wrote:
> What does the "A" designation stand for? Is this "automatic"? I am
> doing some research on the CS and cannot find info for the "A"
> desigantion. Any help is appreciated.
> Bud