Toyota's zero-percent financing and special lease deals generated nearly a 40-percent spike in purchase intent by visitors to Edmunds.com.

In January, Toyota's purchase intent averaged just over 13 percent and then fell to a 9.7 percent low as a result of the recall announcements.

On March 1, Toyota purchase intent had recovered to 13 percent. A day later, when the incentives program was announced, Toyota purchase intent soared to 18 percent - a 14-month high.