[Ali Imran]

Issues with the Koran
The claim that the Quran contains "grave mistakes" is a contested one. Muslims believe the Quran is the literal word of God and is free of error. However, some scholars and critics point to perceived contradictions, historical inaccuracies, and textual variants as evidence of errors. 

Arguments for errors: 

• [size=11]Textual variants:
  There are different recitations and textual variations within the Quran, such as those related to the Hafs and Warsh versions. 
  
  
  
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• [size=11]Historical inaccuracies:
  Some critics argue that the Quran contains historical inaccuracies or inconsistencies. 
  
  
  
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• [size=11]Contradictions:
  Certain verses are perceived as contradicting each other, or contradicting other religious texts. 
  
  
  
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• [size=11]Interpretational challenges:
  Some verses require complex interpretations to reconcile apparent inconsistencies, which some find problematic, according to Quora[/size]
  
  

ALL Muslim scholars say the Quran is preserved.