Germany's carmakers are looking to join forces to push clean diesels in the U.S. market with the Bluetec technology developed by Mercedes-Benz (DCXGn.DE) and diesel injection system specialist Bosch (ROBG.UL).

Starting in 2008, Volkswagen (VOWG.DE), its premium unit Audi, BMW (BMWG.DE) and Mercedes aim to launch and market Bluetec in the world's largest car market, where diesel has a market share of just 5 percent versus 50 percent in western Europe.

Spokespersons for Volkswagen and Mercedes parent DaimlerChrysler confirmed a report in German industry newspaper Automobilwoche to be published on Monday.

Aside from a quicker market penetration, the alliance is hoping to gain cost savings in purchasing the specific modules that mainly stem from Bosch, the world's largest automotive parts supplier.

Bluetec diesels fulfil the stringent U.S. emission norm Bin 5 that goes into effect in 2009.

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