Euro, European Union’s single currency, "go off the rails" if a decisive action is not taken by politicians to save it, car industry executives has warned.

Speaking at the Frankfurt car show, executives from major car manufacturers urged Europe's politicians to take bold to solve the debt crisis by giving certainty to financial markets.

Sergio Marchionne, CEO of Italy's Fiat and US carmaker Chrysler, said stressed that the problems must be tackled in a serious way.

Stephen Odell, chief of Ford Europe, urged that European politicians to act fast tackle the currency’s instability and manage the European crisis.

Speaking on the topic, "I just want to see some agreement, stability and people sticking to that. In business, there's nothing worse in life than uncertainty and we've got a whole lot of uncertainty."

Dieter Zetsche, Daimler's boss, suggested that if Greece was compelled to exit Euro it should be done in such a way that shields the integrity of the bulk of the Euro-zone.

After suffering the economic downturn of 2007-09, the car industry has been on the recovery path, but now it has again started looking at shakier prospects amid Europe's debt crisis and trembling US economy.

Car industry executives expressed their concerns as they gathered to display their new models in Frankfurt.