SHANGHAI (Reuters) - Tesla Inc has shortened delivery waiting times for its rear-wheel drive Model Ys in China to one to four weeks, it said on its Chinese website, the second change in less than a month.

The U.S. automaker previously slashed the waiting time for the same version of Model Y cars to four to eight weeks in China as it ramped up output at its Shanghai plant after upgrading production lines.

Buyers of other versions of the SUV and Model 3 sedans still need to wait for 12 to 20 weeks after placing their orders, the website showed.

(Reporting by Zhang Yan and Brenda Goh; Editing by Tom Hogue)