Heat exchanger, in particular for a motor vehicle, - with a plurality of plate pairs which are disposed adjacent to one another along a pile direction and comprise in each case one first and one second plates (3a, 3b), which in the pile direction restrict a first fluid path through which can flow a first fluid (F 1), - wherein between two plate pairs adjacent in the pile direction a second fluid path is formed through which a second fluid is to flow, - wherein in at least one second fluid path, preferably in all second fluid paths, plurality of turbulence generating elements is disposed a, which at one end are connected with a first plate of a plate pair restricting the second fluid path and at the other end are connected with a second plate of a plate pair adjacent in pile direction, - wherein the plurality of turbulence generating elements, in a top view onto the first or second plate (3a, 3b), is disposed in a grid-like manner with at least two gridlines on the first and/or second plate (3a, 3b). - wherein through the at least two gridlines a row direction is defined, - wherein in the top view the turbulence generating elements are formed longitudinally along the pile direction onto the first plate (3a, 3b) and in each case extend along a longitudinal direction which extends perpendicularly to the row direction, - wherein a length of at least one turbulence generating element, preferably of all turbulence generating elements, is equal to at least five times, preferably at least ten times, most preferably at least twenty times a maximal breadth (b) of the respective turbulence generating element, - wherein the length is measured in the longitudinal direction and the breadth (b) is measured in the row direction, characterised in that the turbulence generating elements adjacent in row direction form element pairs, wherein the two turbulence generating elements of each element pair with respect to a symmetry axis, which in the top view extends onto the first or second plate along the longitudinal direction, are disposed axisymmetrically to one another. - with a plurality of plate pairs which are disposed adjacent to one another along a pile direction and comprise in each case one first and one second plates (3a, 3b), which in the pile direction restrict a first fluid path through which can flow a first fluid (F 1), - wherein between two plate pairs adjacent in the pile direction a second fluid path is formed through which a second fluid is to flow, - wherein in at least one second fluid path, preferably in all second fluid paths, plurality of turbulence generating elements is disposed a, which at one end are connected with a first plate of a plate pair restricting the second fluid path and at the other end are connected with a second plate of a plate pair adjacent in pile direction, - wherein the plurality of turbulence generating elements, in a top view onto the first or second plate (3a, 3b), is disposed in a grid-like manner with at least two gridlines on the first and/or second plate (3a, 3b). - wherein through the at least two gridlines a row direction is defined, - wherein in the top view the turbulence generating elements are formed longitudinally along the pile direction onto the first plate (3a, 3b) and in each case extend along a longitudinal direction which extends perpendicularly to the row direction, - wherein a length of at least one turbulence generating element, preferably of all turbulence generating elements, is equal to at least five times, preferably at least ten times, most preferably at least twenty times a maximal breadth (b) of the respective turbulence generating element, - wherein the length is measured in the longitudinal direction and the breadth (b) is measured in the row direction,