v3.26.1
Document And Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Mar. 25, 2026
Jun. 30, 2025
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Document Transition Report false    
Entity File Number 001-41066    
Entity Registrant Name SONO GROUP N.V.    
Entity Incorporation, State or Country Code P7    
Entity Tax Identification Number 98-1828632    
Entity Address, Address Line One Waldmeisterstraße 93    
Entity Address, Postal Zip Code 80935    
Entity Address, City or Town Munich    
Entity Address, Country DE    
City Area Code 49    
Local Phone Number (0)89 4520 5818    
Title of 12(b) Security Ordinary Shares    
Trading Symbol SSM    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 7.2
Auditor Firm ID 606    
Auditor Name auditor    
Auditor Location Glastonbury, Connecticut    
Entity Central Index Key 0001840416    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Amendment Flag false    
Ordinary Shares [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding (in shares)   1,424,834  
High Voting Shares [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding (in shares)   40,000