Mr Huhne and another person - thought to be his ex-wife Vicky Pryce - were questioned amid claims he asked her to take penalty points on his behalf in March 2003.
Essex Police said: "Two individuals have been interviewed at police stations in Essex and London in respect of allegations regarding a speeding offence."
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Hide AdThe force did not confirm whether either interview was carried out under caution, but said no arrests were made.
A spokeswoman for Mr Huhne said: "Chris Huhne helped the Essex Police with their inquiries today and looks forward to an early resolution of this issue."