| Cover | Aug. 30, 2021 |
| Affiliate, Collateralized Security [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 30, 2021 |
| Entity File Number | 001-39457 |
| Entity Registrant Name | ELECTRIC LAST MILE SOLUTIONS, INC. |
| Entity Central Index Key | 0001784168 |
| Entity Tax Identification Number | 84-2308711 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 1055 W. Square Lake Road |
| Entity Address, City or Town | Troy |
| Entity Address, State or Province | MI |
| Entity Address, Postal Zip Code | 48098 |
| City Area Code | (888) |
| Local Phone Number | 825-9111 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Common Stock, par value $0.0001 per share | |
| Affiliate, Collateralized Security [Line Items] | |
| Title of 12(b) Security | Common Stock, par value $0.0001 per share |
| Trading Symbol | ELMS |
| Security Exchange Name | NASDAQ |
| Redeemable warrants, each whole warrant exercisable for one share of common stock, each at an exercise price of $11.50 per share | |
| Affiliate, Collateralized Security [Line Items] | |
| Title of 12(b) Security | Redeemable warrants, each whole warrant exercisable for one share of common stock, each at an exercise price of $11.50 per share |
| Trading Symbol | ELMSW |
| Security Exchange Name | NASDAQ |
