an electric machine defining an axis of rotation, a transmission connected to the electric machine, and an inverter,

an at least two-part housing in which the electric machine, transmission, and inverter are disposed, wherein the electric machine is disposed in a first housing part of the housing and the inverter is disposed in a second housing part of the housing, wherein a bottom of the second housing part is attached at a top of the first housing part;

a first cooling circuit for the inverter, the first cooling circuit configured for conveying a first fluid;

a second cooling circuit for the electric machine, the second cooling circuit configured for conveying a second fluid;

wherein the first and second cooling circuits are thermally connected via a common heat exchanger;

wherein the common heat exchanger has a base and a cover that are disposed in the housing radially below the inverter and above the electric machine,

wherein the base and the cover each define a heat-exchanger surface between the first and second cooling circuits,

wherein the first cooling circuit and the second cooling circuit are connected in parallel and fluidically isolated relative to each other;

wherein a heat exchanger portion of the second cooling circuit extends through an axially extending space defined below the cover and above the base;

wherein the heat exchanger portion of the second cooling circuit includes an interior space within the common heat exchanger defined between the base and the cover, such that the second fluid flowing through the second cooling circuit flows through the interior space from an inlet to at least one outlet;

wherein the second fluid exiting the inlet impinges on structure extending between the base and the cover of the common heat exchanger and spreads out along a bottom of the common heat exchanger defined by the base; and

wherein the structure includes fins extending fully between the base and the cover and knobs extending from the base but not in contact with the cover, wherein the at least one outlet of the common heat exchanger includes a shielding wall extending from the base that is not in contact with the cover.