this is from the hertz.com age/restrictions page


Age Restrictions and Exceptions

On most rentals, the minimum rental age is 25 years old.



EXCEPTIONS



Corporate Accounts



Various corporate accounts have agreements with Hertz which
permit employees of those companies, between the ages of 21-24,
to rent for business purposes. Renters must present a valid
Corporate Identification Card at the time of rental and
additional fees may apply. Please contact your company travel
department to verify age exceptions when renting for business
purposes.



Michigan



For ages 18-21 - Hertz will rent to customers between the ages
of 18-21 years at all corporate locations in the State of
Michigan. In addition to the base rental rate, an Underage
Liabilty Charge of USD 41.00 per day will be assessed on
rentals to this age group.
For ages 22-24 - Hertz will rent to customers between the ages
of 22-24 years at all corporate locations in the State of
Michigan. In addition to the base rental rate, an Underage
Liability Charge of USD 17.00 per day will be assessed on
rentals to this age group.



Renters must possess a valid driver's license, provide an
acceptable form of payment and be subject to driver's license
verification or complete a driving record certification. For
details on this verification, refer to the policy information
for Driver's License.



Advance reservations are required and reservations may not be
confirmed via the Internet. Please contact the reservatons
office nearest you - see How to Reach Us.



New York



For ages 18-24 - In 1997, the New York Court of Appeals ruled
that car rental companies cannot refuse to rent to persons 18
years of age or older in the State of New York solely on the
basis of age, provided that insurance coverage for persons of
such age is available. The Court found that insurance had
become "available" through the New York Automobile Insurance
Plan (i.e., the "Assigned Risk" Plan.) At corporate locations
in the State of New York, Hertz now makes available to the
18-24 age group, a number of specific vehicles for which
insurance has been purchased. The rental charges for these
vehicles will include a New York Underage Insurance
Differential charge (currently USD 51.00 per day) that will
automatically be added to the base rental rate at time of
reservation.



Renters must possess a valid driver's license, provide an
acceptable form of payment and be subject to a driver's license
verification or complete a driving record certification. For
details on this verification and certification, refer to the
section titled Driver's License.



Advance reservations are required and reservations may not be
confirmed via the Internet. Please contact the reservations
office nearest you - see How to Reach Us