Toyota Motor Corp plans to introduce six new hybrid vehicles by the end of 2012 and bring an electric vehicle to the U.S. market that year also, a top research and development executive said on Monday.

Toyota also plans to bring an electric vehicle to the U.S. market in a joint development with Tesla Motors and plans to show it at the Los Angeles auto show in November, Executive Vice President Takeshi Uchiyamada said.

Uchiyamada made the remarks to reporters at an appearance in Detroit on Monday.

Toyota's Prius gasoline-electric hybrid vehicle has dominated the segment. The world's largest automaker has been less certain about the market for fully electric vehicles such as the Nissan Motor Co Leaf due out this year.

Tesla and Toyota announced a partnership in May to develop electric vehicles under the strategy of the U.S. startup company that is known for its $109,000 Roadster, which is powered by more than 6,800 laptop batteries.

Toyota had previously said it was working on a battery-powered small car to launch in 2012.

Japan-based Toyota has made several moves to ensure the quality of its vehicles after a string of more than 11 million recalls globally over the past year.

Uchiyamada said in July Toyota would extend vehicle development time by an average of about four weeks to improve its products and has set up a team of 100 engineers to audit quality from a driver's perspective.

(Reporting by Kevin Krolicki, editing by Leslie Gevirtz)

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