Zipcar Inc., the car-sharing company that rents vehicles by the hour, said it will seek to raise as much as $133 million in its initial public offering.

The company, which has yet to post a profit since it was founded in 2000, is offering 8.33 million shares for $14 to $16 each, the Cambridge, Mass.-based Zipcar said in a regulatory filing yesterday. Proceeds will be used to reduce debt and for business expansion, the filing showed.

Zipcar’s net loss in 2010 widened to $14.1 million from $4.7 million a year earlier, the filing showed. Revenue increased 42 percent to $186.1 million in the same period.