A vehicle lighting unit comprising: a light source; a projection lens having a rear side focal point (F 14); and a light guiding body configured to collect light from the light source at or near the rear side focal point (F 14) of the projection lens so as to guide the light to the projection lens, wherein the light guiding body includes a first optical surface that can serve as a light exiting surface through which the light emitted from the light source and guided through the light guiding body can exit, the projection lens includes the first optical surface, and the projection lens is configured to have the rear side focal point (F 14) located behind the first optical surface, characterized in that: the projection lens further includes at least a second optical surface and a third optical surface, wherein an additional lens section is integrally formed with said light guiding body and has a front surface serving as the third optical surface and a rear surface serving as the second optical surface, wherein: the projection lens is configured to include the first optical surface of the light guiding body, and the second optical surface and the third optical surface of the additional lens section; and the second optical surface of the additional lens section is disposed in front of the light guiding body away from the first optical surface of the light guiding body with a predetermined gap therebetween. a light source; a projection lens having a rear side focal point (F 14); and a light guiding body configured to collect light from the light source at or near the rear side focal point (F 14) of the projection lens so as to guide the light to the projection lens, wherein the light guiding body includes a first optical surface that can serve as a light exiting surface through which the light emitted from the light source and guided through the light guiding body can exit, the projection lens includes the first optical surface, and the projection lens is configured to have the rear side focal point (F 14) located behind the first optical surface, characterized in that: the projection lens further includes at least a second optical surface and a third optical surface, wherein an additional lens section is integrally formed with said light guiding body and has a front surface serving as the third optical surface and a rear surface serving as the second optical surface, the projection lens further includes at least a second optical surface and a third optical surface, wherein an additional lens section is integrally formed with said light guiding body and has a front surface serving as the third optical surface and a rear surface serving as the second optical surface, wherein: the projection lens is configured to include the first optical surface of the light guiding body, and the second optical surface and the third optical surface of the additional lens section; and the second optical surface of the additional lens section is disposed in front of the light guiding body away from the first optical surface of the light guiding body with a predetermined gap therebetween. the projection lens is configured to include the first optical surface of the light guiding body, and the second optical surface and the third optical surface of the additional lens section; and the second optical surface of the additional lens section is disposed in front of the light guiding body away from the first optical surface of the light guiding body with a predetermined gap therebetween.