Mechanical-hydraulic brake booster having an expansion for autonomous braking

A vehicle, comprising:

• a brake booster for a vehicle, comprising:
• a cylinder housing including a center bore for receiving a user-operated push-rod piston for building up a fluid pressure inside the cylinder housing in response to actuation of the push-rod piston;
• a first fluid line in fluid communication with an axial recess in the cylinder housing;
• a second fluid line in fluid communication with the center bore in a cylinder housing region, wherein the first and second fluid lines each is fluidly connected to a fluid reservoir at their respective other ends;
• a third fluid line that interconnects the first and second fluid lines in a fluid manner;
• a first valve that is at least one of electrically operable, hydraulically operable, and mechanically operable, wherein the first valve is situated in the third fluid line;
• and
• a second valve that is at least one of electrically operable, hydraulically operable, and mechanically operable, wherein the second valve is situated in the second fluid line, in back of a fluid connection of the third fluid line to the second fluid line, when viewed in the direction of the fluid reservoir, wherein a build-up of fluid pressure is generated autonomously with the aid of the first valve, when the second valve interrupts a fluid stream in the second fluid line.