An apparatus for heating fuel, in particular alcohol, for the operation of combustion engines. The latter can be operated with alcohol or with an alcohol/gasoline mixture. The apparatus for heating fuel is integrated into the injection system of the combustion engine operable with alcohol or with an alcohol/gasoline mixture. The apparatus comprises a thin-walled heating tube that is received in a housing and surrounds a heating element. The heating element is produced from a material that exhibits a considerable rise in its electrical resistance with increasing temperature.
