Exhibit 31.3

Certifications 

I, Andrew J. Littlefair, certify that:

1. I have reviewed this Amendment No. 1 to Form 10-K for the fiscal year ended December 31, 2017 of Clean Energy Fuels Corp.; 

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; and

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report. 

Date: April 13, 2018

/s/ ANDREW J. LITTLEFAIR

Andrew J. Littlefair

President and Chief Executive Officer

(Principal Executive Officer)