UPDATE 1-Airbus to launch successor to A320 in 2014-report

(Adds Airbus comment, share price)

PARIS, July 8 (Reuters) - European aircraft maker Airbus is planning to launch the successor generation of A320s in 2014 and put them in service around 2018, French daily La Tribune reported on Tuesday.

In response, Airbus said there would be a successor generation to the A320 but only "when the technology was ready" and declined to confirm the timeline reported by La Tribune.

"There is nothing new (in this story) in light of what we have said in the past," a spokeswoman said on Tuesday.

Development cost of the project, called A30X, is estimated at between 8 billion euros ($12.52 billion) and 10 billion euros, the newspaper added without citing sources.

One of the new aircraft's targets is to reduce fuel consumption, it added.

However, the newspaper said the timing was not set in stone as it depended on what the competition did and the fluctuation of oil prices.

Airbus is owned by European aerospace group EADS (EAD.PA: Quote, Profile, Research) whose shares were down 2.8 percent at 11.99 euros, pulled down by a wider stock market fall.

(Reporting by Astrid Wendlandt; Editing by Quentin Bryar and Erica Billingham)