A transmission arrangement (100, 200, 300, 400, 500) for a vehicle, the transmission arrangement comprising a first, a second, a third, and a fourth planetary gear set comprising a sun gear, a planet carrier and a ring gear, respectively, wherein said transmission arrangement further comprises a transmission housing, an input shaft and an output shaft, wherein - the planet carrier of the first planetary gear set and the output shaft are operatively connected to each other; - the ring gear of the first planetary gear set and the planet carrier of the second planetary gear set are operatively connected to each other; - the sun gear of the first planetary gear set and the sun gear of the second planetary gear set are operatively connected to each other; - the ring gear of the second planetary gear set and the planet carrier of the third planetary gear set are operatively connected to each other; and - one of the sun gear, the planet carrier and the ring gear of the fourth planetary gear set is operatively connected to one of the sun gear, the planet carrier and the ring gear of the third planetary gear set or to the input shaft, while at the same time, another one of the sun gear, the planet carrier and the ring gear of the fourth planetary gear set is operatively connected to another one of the sun gear, the planet carrier and the ring gear of the third planetary gear set or to the input shaft, whereby the transmission arrangement comprises a first connecting mechanism for selectively connecting the planet carrier of the second planetary gear set to the ring gear of the third planetary gear set; - a second connecting mechanism for selectively connecting the sun gear of the third planetary gear set to the planet carrier of the second planetary gear set and to the ring gear of the first planetary gear set; - a first locking mechanism for selectively locking the ring gear of the third planetary gear set to the transmission housing - a second locking mechanism for selectively locking the planet carrier of the second planetary gear set to the transmission housing; and - a third locking mechanism for selectively locking the sun gear of the second planetary gear set and the sun gear of the first planetary gear set to the transmission housing, wherein the stationary gear ratio of each one of the first, second and third planetary gear sets are negative. - the planet carrier of the first planetary gear set and the output shaft are operatively connected to each other; - the ring gear of the first planetary gear set and the planet carrier of the second planetary gear set are operatively connected to each other; - the sun gear of the first planetary gear set and the sun gear of the second planetary gear set are operatively connected to each other; - the ring gear of the second planetary gear set and the planet carrier of the third planetary gear set are operatively connected to each other; and - one of the sun gear, the planet carrier and the ring gear of the fourth planetary gear set is operatively connected to one of the sun gear, the planet carrier and the ring gear of the third planetary gear set or to the input shaft, while at the same time, another one of the sun gear, the planet carrier and the ring gear of the fourth planetary gear set is operatively connected to another one of the sun gear, the planet carrier and the ring gear of the third planetary gear set or to the input shaft, whereby the transmission arrangement comprises a first connecting mechanism for selectively connecting the planet carrier of the second planetary gear set to the ring gear of the third planetary gear set; - a second connecting mechanism for selectively connecting the sun gear of the third planetary gear set to the planet carrier of the second planetary gear set and to the ring gear of the first planetary gear set; - a first locking mechanism for selectively locking the ring gear of the third planetary gear set to the transmission housing - a second locking mechanism for selectively locking the planet carrier of the second planetary gear set to the transmission housing; and - a third locking mechanism for selectively locking the sun gear of the second planetary gear set and the sun gear of the first planetary gear set to the transmission housing, wherein the stationary gear ratio of each one of the first, second and third planetary gear sets are negative.