The CNN Fact Check Desk wondered: Which other car manufacturers have had a problem with sudden unintended acceleration?

CNN: Fact Check: Toyota not alone in acceleration problems

There are numerous references to so-called "Books of Knowledge, " highly confidential information on design, safety systems and testing records allegedly generated by Toyota engineers on everything from roll-overs and roof safety to sudden unintended acceleration.

CNN: STORY HIGHLIGHTS

As the company's woes continue to mount, there has been some speculation from critics such as Rep. Henry Waxman, D-California, as to whether Toyota's recent problems with sudden unintended acceleration go beyond the problems already identified.

CNN: Fact Check: Toyota not alone in acceleration problems

Toyota has settled a wrongful death lawsuit following a fatal crash in Utah in 2010 involving sudden, unintended acceleration, the company has said.

BBC: Toyota settles fatal crash lawsuit

Those obstacles included a recall over allegations of unintended sudden acceleration by Toyota vehicles, a problem that raised questions about the company's quality control, safety measures and customer service.

WSJ: Toyota Overhauls Management