The nearly five-year relationship between carmaker Saturn and agency Goodby, Silverstein & Partners has drawn to a close, and Saturn has shifted its account to Interpublic Group's Deutsch/LA without a review, reports AdWeek.

After an initial period of success, Goodby has had trouble with the account in recent years. Its most innovative work has been outside of broadcast, largely involving online promotions and events.

Despite that, sales of GM's Saturn brands were flat or only up slightly in 2006, and the inability of Goodby's campaigns to raise those numbers were likely a major factor in losing the account.

GM spent $190 million on advertising for Saturn in the first 11 months of last year, according to Nielsen Monitor-Plus.