Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2022	Mar. 15, 2023	Jun. 30, 2022
Document Information Line Items
Entity Registrant Name	CYNGN INC.
Trading Symbol	CYN
Document Type	10-K
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		33,719,592
Entity Public Float			$ 11,277,345
Amendment Flag	false
Entity Central Index Key	0001874097
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	Dec. 31, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Shell Company	false
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Document Annual Report	true
Document Transition Report	false
Entity File Number	001-40932
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	46-2007094
Entity Address, Address Line One	1015 O’Brien Dr
Entity Address, City or Town	Menlo Park
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94025
City Area Code	(650)
Local Phone Number	924-5905
Title of 12(b) Security	Common Stock, Par Value $0.00001
Security Exchange Name	NASDAQ
Entity Interactive Data Current	Yes
Auditor Name	Marcum LLP
Auditor Location	San Jose, California
Auditor Firm ID	688