Motor vehicle drivetrain

A motor vehicle drivetrain comprising:

• an input shaft;
• an output shaft;
• a continuously variable transmission having a variable transmission ratio selectively coupling the input shaft to the output shaft, wherein the variable transmission ratio has a maximum forward motion and a minimum forward motion;
• and
• a bypass transmission with at least one bypass gearing having a fixed transmission ratio selectively coupling the input shaft to the output shaft, wherein a value of a transmission ratio of the bypass gearing is less than or equal to half the sum of the value of the maximum forward motion and the value of the minimum forward motion but not greater than 1.0.

A method for operating a motor vehicle drivetrain comprising:

• automatically coupling an input shaft to an output shaft by a bypass transmission;
• automatically decoupling the bypass transmission based on at least one of a current transmission ratio of a continuously variable transmission and a driving speed of the motor vehicle;
• and
• automatically coupling the input shaft to the output shaft by the continuously variable transmission as the bypass transmission is decoupled from the input and output shafts.