Document and Entity Information - shares
 6 Months Ended
Sep. 30, 2019
Jun. 01, 2020
Document And Entity Information    
Entity Registrant Name Saleen Automotive, Inc.  
Entity Central Index Key 0001528098  
Document Type 10-Q  
Document Period End Date Sep. 30, 2019  
Amendment Flag false  
Current Fiscal Year End Date --03-31  
Entity Current Reporting Status No  
Entity Interactive Data Current No  
Entity Filer Category Non-accelerated Filer  
Entity Small Business Flag true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   24,536,963
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2020