Tesla CEO Elon Musk made two posts on X that appear to tease a new car or relaunch of a car for "10/7." Tesla stock had its largest one-day gain in a while.

"I'm definitely not buying them. For the same price, there are far more options I can get from local automakers," one user wrote on Weibo.

Elon Musk has said his automaker would sell an affordable Model Y, as “people don’t have enough money in the bank account to buy it” despite high demand.

Tesla announced the launch of cheaper versions of two of its electric vehicles Tuesday in hopes of reviving flagging sales.

But the carmaker's shares tumbled about 4% as investors were underwhelmed by the announcement. In the US, the new versions of its Model Y mid-sized sport utility vehicle and Model 3 sedan are priced only $5,000 less than previous versions.

Tesla just launched two brand new, affordable models. But the catch is that they are not actually new. The newly unveiled models are practically just a Tesla Model Y SUV and a Model 3 sedan with some basic features removed to get the price tag down. The Model Y pricing starts at $39,990, and the Model 3 starts at $36,990.

Tesla unveiled less expensive versions of its Model 3 and Model Y vehicles on Tuesday after months of anticipation.

Even so, the slumping sales seem unlikely to have a major effect on Tesla's stock price. The shares have declined by only single-digit percentages since the Q3 numbers came out, and the stock is still up by more than 6% year-to-date: