"When I am in town I get around either on a scooter, a motorbike or on a bicycle," the BBC TV presenter told GQ.
"I've lost count of the times I've pulled up to the lights on my shiny Specialized bicycle and heard someone yell, 'Hey, mate, where's your Ferrari?'
Hammond's nickname is 'Hamster'.
"The truth is I've always loved cycling, ever since I was a kid," said Hammond.
"If you have a meeting in London and it's 45 minutes away, you can get in an hour-and-a-half's decent aerobic exercise."