To put it mildly, automakers don't like to conduct recalls. They are very expensive and don't exactly do wonders for marketing efforts. Most problems never get to the recall stage; that doesn't mean they're not problems, it just means the manufacturer has managed to wriggle out of conducting a full-scale recall. Much more common are "secret" warranties and technical service bulletins. Also, newer vehicles with persistent problems may be covered by the Lemon Law in your state.