| Cover | Dec. 01, 2023 |
| Entity Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Dec. 01, 2023 |
| Entity Registrant Name | XOS, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-39598 |
| Entity Tax Identification Number | 98-1550505 |
| Entity Address, Address Line One | 3550 Tyburn Street |
| Entity Address, City or Town | Los Angeles |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 90065 |
| City Area Code | 818 |
| Local Phone Number | 316-1890 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001819493 |
| Common Stock | |
| Entity Information [Line Items] | |
| Title of 12(b) Security | Common Stock, $0.0001 par value per share |
| Trading Symbol | XOS |
| Security Exchange Name | NASDAQ |
| Warrant | |
| Entity Information [Line Items] | |
| Title of 12(b) Security | Warrants, each whole warrant exercisable for one share of Common Stock at an exercise price of $11.50 per share |
| Trading Symbol | XOSWW |
| Security Exchange Name | NASDAQ |
