Method for assisting a driver in the driving of a motor vehicle

A method for assisting a driver with driving a motor vehicle, the method comprising:

• ascertaining a permissible driving speed in a route section that is presently driven or may be driven in a future by evaluating environmental data describing a motor vehicle environment;
• ascertaining at least one of a predefined reduction amount or a predefined scaling factor as a function of at least one of a detected state of charge of an energy store of the motor vehicle, a detected fill level of a fuel tank of the motor vehicle, or information ascertained by a navigation device describing a distance from a predefined destination;
• calculating a target maximum speed, which is lower than the permissible driving speed, by at least one of subtracting the predefined reduction amount from the permissible driving speed or multiplying the permissible driving speed by the predefined scaling factor;
• and
• performing at least one of controlling at least one alert device for outputting an alert to the driver when a present driving speed of the motor vehicle exceeds the target maximum speed or controlling the driving speed of the motor vehicle by a longitudinally guiding driver assistance system, wherein the target maximum speed is used as a maximum speed or as a target speed.

A motor vehicle comprising a control unit, the control unit configured to:

• ascertain a permissible driving speed in a route section that is presently driven or will presumably be driven in the future by evaluating environmental data describing the motor vehicle environment;
• ascertain at least one of a predefined reduction amount or a predefined scaling factor as a function of at least one of a detected state of charge of an energy store of the motor vehicle, a detected fill level of a fuel tank of the motor vehicle, or information ascertained by a navigation device describing a distance from a predefined destination;
• calculate a target maximum speed, which is lower than the permissible driving speed, by at least one of subtracting a predefined reduction amount from the permissible driving speed or multiplying the permissible driving speed by a predefined scaling factor;
• and
• perform at least one of controlling at least one alert device for outputting an alert to the driver when a present driving speed of the motor vehicle exceeds the target maximum speed or controlling the driving speed of the motor vehicle by a longitudinally guiding driver assistance system, wherein the target maximum speed is used as a maximum speed or as a target speed.