Angrily refuting “preposterous” allegations that it made customers sign contracts forbidding them to talk to regulators, Tesla has denied claims that there were safety defects in the suspension of its Model S and Model X cars.

A blog called the “Daily Kanban” had claimed it investigated a complaint on an unofficial forum and the comments came after the claim by the blog. A member called “gpcordaro” said that he was driving down a steep hill and “heard a snap”. He found that part of the suspension system had broken after stopping the car. Tesla said they could not cover it under warranty, saying that it was normal wear and tear when the company was contacted by the user.

Tesla sent him a “Goodwill Agreement” to sign in exchange for a 50 percent discount on the repairs and posted a screenshot of the contract “gpcordaro” said in a subsequent post.

The forum user claimed that the National Highway Traffic Safety Administration (NHTSA) had written to him saying that the suspension parts “were of poor quality and failed prematurely” after he had reported the issue to the NHTSA. They were “looking for more examples to test” and were in contact with Tesla, a follow up email allegedly from the NHTSA said.

“The agency immediately informed Tesla that any language implying that consumers should not contact the agency regarding safety concerns is unacceptable, and NHTSA expects Tesla to eliminate any such language. Tesla representatives told NHTSA that it was not their intention to dissuade consumers from contacting the agency,” Bryan Thomas, a spokesperson for the agency said in a public statement on Thursday.

There is no safety defect with the suspension in either the Model S or Model X, said Tesla in a blog post late Thursday night which is led by Elon Musk. It was an “unusual case”, the blog said while addressing the specific example of “gpcordaro”.

“With respect to the car that is discussed in the blog post that led to yesterday’s news…the suspension ball joint experienced very abnormal rust. We haven’t seen this on any other car, suggesting a very unusual use case. The car had over 70,000 miles on it and its owner lives down such a long dirt road that it required two tow trucks to retrieve the car. (One to get the car to the highway and one to get it from the highway to the service center.) When we got the car, it was caked in dirt,” the blog from Tesla said.

Not even a so-called “preliminary evaluation”, which is the “lowest form of formal investigatory work it does”, had been started by the NHTSA, Tesla also said and added that there were no remote conformity of any investigations.

The regulator asked about its suspension as part of a “routine screening” on April 20, the car maker said and it complied on April 30.

“NHTSA has since told us that we have cooperated fully and that no further information is needed. Neither before nor after this information was provided has NHTSA identified any safety issue with Tesla’s suspensions. This can be confirmed with NHTSA,” Tesla said.

(Adapted from CNBC)