Drive system for a motor vehicle

A drive system for a motor vehicle, comprising:

• an internal combustion engine;
• an air and exhaust gas system that includes at least one throttle;
• an exhaust gas recirculation system in fluidic connection with the air and exhaust gas system at two connecting points;
• and
• a measuring device adapted to:
• detect an atmospheric pressure,
• detect a gas pressure at a measuring point within the air and exhaust gas system, and
• ascertain a differential pressure as a function of the gas pressure and the atmospheric pressure, wherein the measuring point is fluidically situated between the throttle and the internal combustion engine and in a region of one of the connecting points.

A method for operating a drive system for a motor vehicle that includes an internal combustion engine, an air and exhaust gas system that includes a throttle, and an exhaust gas recirculation system in fluidic connection with the air and exhaust gas system at two connecting points, the method comprising:

• detecting an atmospheric pressure;
• detecting a gas pressure within the air and exhaust gas system, the gas pressure being fluidically detected between the throttle and the internal combustion engine and in a region of one of the connecting points;
• and
• ascertaining a differential pressure as a function of the gas pressure and the atmospheric pressure.