That's what the Media Research Center found from reviewing its "product" and has published in a new study.

According to The Federalist:

In a study published Tuesday, Media Research Center (MRC) Free Speech America found that NewsGuard, the taxpayer censorship giant self-tasked with rating media outlets on reliability, "overwhelmingly favored left-leaning outlets over right-leaning ones." This is the third year MRC Free Speech America has exposed NewsGuard for its partisanship, and, according to MRC, NewsGuard has become "even worse" than years prior.

Using AllSides, an organization that classifies media outlets by their "right" to "left" bias, "MRC researchers determined that NewsGuard provided a stellar average 'credibility' rating of 91/100 for 'left' and 'lean left' outlets (e.g., The New York Times, The Washington Post, TIME, Vox)," wrote MRC researchers. Meanwhile, "right" and "lean right" outlets, such as Fox News, the New York Post, and The Daily Wire, were given "an outrageously abysmal average score of 65/100." 

"NewsGuard's rating for right-leaning outlets in particular was worse than the still-low 66/100 average rating it slapped on right-leaning media across the prior two MRC studies released Jan. 6, 2023 and Dec. 13, 2021," MRC noted.