The news comes on top of the loss of the 拢400m General Motors pan-European media account, which is set to shift from the group's media agency Universal McCann to the Aegis network, as revealed exclusively by 北京赛车pk10 on Brand Republic yesterday.
Industry sources said that GM made the decision to move the business into Aegis after contractual wranglings with Universal McCann.
The decision follows the switch last year of its $2.5bn US media account from Universal McCann to Starcom MediaVest Group.
Mike Jackson, General Motors North America vice-president for marketing and advertising, said: "GM is fundamentally changing the way we market and sell our vehicles. We are very focused on addressing the quality perception gap between how consumers view GM cars and trucks and the reality of how beautifully designed and well engineered they truly are.
"The GM 100,000 Mile Warranty campaign, which Deutsch helped us launch last month, is the latest example of this new level of confidence at GM today."
GM produces car marques such as Hummer, Chevrolet, Pontiac, Saab and Cadillac.
GM is challenging all of its agencies to improve consideration by not only promoting its new vehicle line-up, but by closing the perceptual gap in areas such as quality and fuel efficiency.
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