Exhaust system, especially for an internal combustion engine of a vehicle

An exhaust system reactant heating device heating element for an internal combustion engine of a vehicle with an exhaust system comprising an exhaust gas-carrying duct, a reactant injection device injecting reactant into exhaust gas flowing in the exhaust gas-carrying duct, a mixer device for supporting a mixing of reactant injected by the reactant injection device with exhaust gas flowing in the exhaust gas-carrying duct, the mixer device being disposed downstream of the reactant injection device and a reactant heating device which extends in the exhaust gas-carrying duct downstream of the reactant injection device and upstream of the mixer device, the reactant being positioned such that exhaust gas, flowing in said duct and reactant injected by the reactant injection device flow around the reactant heating device, the heating element comprising at least two heat conductor sections, which are wound in a meandering pattern, adjoin each other in a connection area and extend essentially next to one another.