In-N-Out may inspire religious devotion among American burger fans, but apparently even the faithful have complaints.

The California-born fast-food institution has spent decades cultivating a cult following around its wallet-friendly burgers and famously fresh ingredients — but a new article tackling top chain customer gripes has exposed cracks in the sainted empire.

From soggy spuds to parking lot gridlock, the Animal-style addicts have been busily airing their beefs online — a backlash that comes during an unusually eventful stretch for the normally change-averse burger chain.

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Read the full article at NYPOST.COM