Here is the quote from the book, in broken English translation:

"With consideration of the fact that the old steering element operated noticeably more directly, one can even state, it was inferior to the newer in nothing. From steering stop to steering stop one must nevertheless move the steering wheel of a beetle with steering rack a half revolution further. That corresponds to an additional 10 % sportier translations; small steering wheels supply the best example of it. Clearly, why the "crack-hard " engine sportsmen are not at all so inspired by the steering rack."