An automotive transmission mechanism for transmitting torque from an engine input shaft (24; 524) of an engine to a drive train comprising: an input shaft (24; 524) of an engine having an engine input member (28; 528) in simultaneous driving relation with a first clutch drive member (42; 542) and a second clutch drive member (44; 544), the first clutch drive member configured to transfer torque from the engine input member to an input side of a first clutch (60; 560) at first gear ratio and the second clutch drive member configured to transfer torque from the engine input member to an input side of a second clutch (62; 562) at a second gear ratio, the second gear ratio different from the first gear ratio; a first layshaft (20; 520) rotatable about a first layshaft axis and selectively engageable to be driven by the first clutch and to receive torque transferred from the engine input member at the first gear ratio; a second layshaft (22; 522) rotatable about a second layshaft axis that is spaced from the first layshaft axis and selectively engagable to be driven by the second clutch and to receive torque transferred from the engine input member at the second gear ratio; the first layshaft having a first set of a plurality of coaxial pinions (70, 74, 78; 570, 574, 578) the second layshaft having a second set of a plurality of coaxial pinions (72, 76, 80; 572, 576); a countershaft (50; 550) rotatable about a countershaft axis that is spaced from the first layshaft axis and the second layshaft axis, the countershaft having a first set of gears (100, 104, 108; 552, 524, 556) and a second set of gears (102, 106, 110; 554; 556) mounted coaxially thereon, each gear from the first set of the gears in intermeshing, driven relation with a pinion from the first set of pinions with a gear ratio therebetween, and each gear from the second set of the gears in intermeshing, driven relation with a pinion from the second set of pinions with a gear ratio therebetween, wherein the gear ratio of each pair of pinions and gears differing from the gear ratios of other pairs of pinions and gears; and each of the first set of pinions independently engagable with the first layshaft when the first clutch is engaged to transfer torque to the countershaft at an effective gear ratio that is a product of the gear ratio between the engaged pinion and gear pair and the first gear ratio between the engine input member and the first clutch drive member, and each of the second set of pinions independently engagable with the second layshaft when the second clutch is engaged to transfer torque to the countershaft at an effective gear ratio that is a product of the gear ratio between the engaged pinion and gear pair and the second gear ratio between the engine input member and the second clutch drive member, each of the effective gear ratios provided thereby differing from the other effective gear ratios characterised in that the engine input member comprises a first sprocket and a second sprocket, the first engine input sprocket driving the first clutch drive sprocket with a first endless chain and the second engine input sprocket driving the second clutch drive sprocket with a second endless chain, the number of sprocket teeth of the first engine input sprocket and the first clutch drive sprocket selected to produce the first gear ratio therebetween, and the number of sprocket teeth of the second engine input sprocket and the second clutch drive sprocket selected to produce the second gear ratio therebetween.