Beverly Braga, Product Communications Specialist for Mazda, assured me that yes, there have been 26 confirmed cases in which the webs of yellow sac spider have caused problems by blocking the evaporative canister vent line of certain 2.5-liter four cylinder vehicles. Approximately 65,000 Mazda6 sedans manufactured from April 8, 2008 through February 8, 2010 are included in the recall.
Allen Dean, a research assistant at the Texas A...M University Department of Entomology, says it's curious that this particular spider would be the culprit because they aren't known for their large webs, unlike orb or tunnel web species. Ms. Braga confirms that no one seems to know why yellow sac spiders are attracted to the car or how they find their way into the fuel system. No fires, accidents, or injuries have been connected to this problem, but company engineers thought 20+ cases was too many to be a coincidence so Mazda is taking a proactive approach. Dealers will inspect and clean the line and install check valve to prevent spiders from taking any zoom-zoom joy rides in the future.