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In fact, the Model X proved to be so difficult that it became a pain for Tesla.
"There was some hubris with the Model X," Musk said. "We over-engineered the car."
According to the Tesla CEO, everything from the seals around the windows to the construction of the second-row seats proved to be hurdles.
But Musk said that the company overcame these issues, which led to a redesign of certain window seals and the insourcing of seat construction.
There aren't any fundamental issues with the Model X, Musk said. In fact, the Silicon Valley tycoon claimed that the vehicle is the "best car ever" made.
"I'm not sure anyone will make a car like this again," he said. "I'm not sure Tesla will make a car like this again."
The Model X's complexity was something Musk brought up at the car's launch in September. At that time, Musk told journalists that it was so hard to put together that Tesla probably shouldn't have made it in the first place.
In spite of the long delays experienced by the program, demand remains strong for the SUV. According to Musk, the company has made efforts to suppress demand for the X and control its order backlog, which has ballooned to tens of thousands of cars.