This is not correct, because mere printing of the object passes as correct answer but fails two test cases, which is never clarified.

Exactly

The problem is, this is bad pedagogy. From earlier challenges we are used to some boilerplate code below what we are supposed to type. There's no indication that reading this code is part of the challenge. For the solution here to be a single console.log line is absurd. Success on this one is about solving the puzzle posed by the unclear presentation.

I agree, this challenge is very poorly written. The task clearly states, "Assign these values to an object car that has the properties type, model and color appropriately and print the object," but this is not the actual task. "Print the object that has been created for you" is more accurate.

Beyond that, nowhere in the intro text do you explain how objects are output to the console, so new users will have no reason to think that simply using console.log(myObject) will produce the desired string. Instead you explain how to access the properties of an object, but don't incorporate that learning into the task!

A task more appropriate to the intro would be to use the object created in the starter code and print the color of the car, for example. This would still require reading of the code, but the user would know this from the task description, and they would actually have to apply a new concept in printing an object property, rather than just treating an object like it's just another variable.

I also agree that this question was not well introduced. Part of the reason I'm doing this challenge is that I've struggled with HackerRank assessments that have been sent to me as a tech screen when interviewing for jobs and I've often struggled with them not because I don't know JavaScript but because of confusing questions or a weird/unexpected way of running the code.