A vehicle transmission (1; 200), comprising: an input shaft into which a driving force from a driving source can be input; an output shaft disposed in parallel with the input shaft; and a plurality of gear trains (G1 to G6; G201 to G206) for forward gears provided between the input shaft and the output shaft, wherein: the output shaft is equipped with a final drive gear configured to drive a differential gear; each of the plurality of gear trains (G1 to G6; G201 to G206) comprises a fixed gear (11, 12, 23 to 26; 211, 212, 223 to 226) fixed to one of the input shaft and the output shaft, and a fitted gear (13 to 16, 21, 22; 213 to 216, 221, 222) rotatably fitted on the other of the input shaft and the output shaft; the fitted gear (13 to 16, 21, 22; 213 to 216, 221, 222) of each of the plurality of gear trains (G1 to G6; G201 to G206) is provided to be capable of being fixed to the input shaft or the output shaft via a synchronizer (40, 50, 60) that is provided adjacent to the fitted gear (13 to 16, 21, 22; 213 to 216, 221, 222) on the same axis as the fitted gear (13 to 16, 21, 22; 213 to 216, 221, 222); a predetermined gear train (G6; G206) among the plurality of gear trains (G1 to G6; G201 to G206) includes the fixed gear (26; 226) in a position adjacent to the final drive gear on the output shaft; and the final drive gear is disposed in a region that overlaps, in an axial direction, with a predetermined synchronizer for the predetermined gear train (G6; G206), characterized in that the gear trains (G1 to G3, G6; G201 to G203, G206) for a first gear, a second gear, a third gear and a sixth gear are located between the gear trains (G4, and G5; G204, G205) for a fourth gear and a fifth gear in the axial direction. an input shaft into which a driving force from a driving source can be input; an output shaft disposed in parallel with the input shaft; and a plurality of gear trains (G1 to G6; G201 to G206) for forward gears provided between the input shaft and the output shaft, wherein: the output shaft is equipped with a final drive gear configured to drive a differential gear; each of the plurality of gear trains (G1 to G6; G201 to G206) comprises a fixed gear (11, 12, 23 to 26; 211, 212, 223 to 226) fixed to one of the input shaft and the output shaft, and a fitted gear (13 to 16, 21, 22; 213 to 216, 221, 222) rotatably fitted on the other of the input shaft and the output shaft; the fitted gear (13 to 16, 21, 22; 213 to 216, 221, 222) of each of the plurality of gear trains (G1 to G6; G201 to G206) is provided to be capable of being fixed to the input shaft or the output shaft via a synchronizer (40, 50, 60) that is provided adjacent to the fitted gear (13 to 16, 21, 22; 213 to 216, 221, 222) on the same axis as the fitted gear (13 to 16, 21, 22; 213 to 216, 221, 222); a predetermined gear train (G6; G206) among the plurality of gear trains (G1 to G6; G201 to G206) includes the fixed gear (26; 226) in a position adjacent to the final drive gear on the output shaft; and the final drive gear is disposed in a region that overlaps, in an axial direction, with a predetermined synchronizer for the predetermined gear train (G6; G206), the output shaft is equipped with a final drive gear configured to drive a differential gear; each of the plurality of gear trains (G1 to G6; G201 to G206) comprises a fixed gear (11, 12, 23 to 26; 211, 212, 223 to 226) fixed to one of the input shaft and the output shaft, and a fitted gear (13 to 16, 21, 22; 213 to 216, 221, 222) rotatably fitted on the other of the input shaft and the output shaft; the fitted gear (13 to 16, 21, 22; 213 to 216, 221, 222) of each of the plurality of gear trains (G1 to G6; G201 to G206) is provided to be capable of being fixed to the input shaft or the output shaft via a synchronizer (40, 50, 60) that is provided adjacent to the fitted gear (13 to 16, 21, 22; 213 to 216, 221, 222) on the same axis as the fitted gear (13 to 16, 21, 22; 213 to 216, 221, 222); a predetermined gear train (G6; G206) among the plurality of gear trains (G1 to G6; G201 to G206) includes the fixed gear (26; 226) in a position adjacent to the final drive gear on the output shaft; and the final drive gear is disposed in a region that overlaps, in an axial direction, with a predetermined synchronizer for the predetermined gear train (G6; G206), characterized in that the gear trains (G1 to G3, G6; G201 to G203, G206) for a first gear, a second gear, a third gear and a sixth gear are located between the gear trains (G4, and G5; G204, G205) for a fourth gear and a fifth gear in the axial direction.