Assembly of a motor vehicle steering column and of a column support, said support being configured to be fitted to a crossmember and comprising a guideway device and a holding device situated at a distance from the guideway device, the column comprising a body and a centring end, the assembly comprising: - a suspension device configured for suspending the column from a guideway of the guideway device such that it is possible to incline the axis of the column about a horizontal axis (YY') that is transverse to the vehicle, - an opening in the holding device, said opening being configured to have a portion of the centring end of the column inserted into it, substantially along the direction of the guideway, the opening being delimited on a first side by a bearing edge configured to support a part of the weight of the column and to hold the column in a first inclined position, once the portion of the centring end has been inserted into the opening, the holding device comprising, on a second side of the opening diametrically opposite to the first side, a stop lip extending forward of the opening in the direction of the guideway so as to form a stop for the centring end during variations in the inclination of the column, characterized in that the column is suspended by the guideway device, about a horizontal axis (YY') that is transverse to the vehicle, before the portion of the centring end is inserted into the opening, the centring end of the column comprising a protrusion, the assembly being configured such that, for at least one angular abutment position of the protrusion against the stop lip, the protrusion lies in line with the opening along the direction of the guideway, the insertion direction of the protrusion lying in a vertical geometric plane which also includes the direction of the guideway and which also comprises the direction of the axis of the steering column. - a suspension device configured for suspending the column from a guideway of the guideway device such that it is possible to incline the axis of the column about a horizontal axis (YY') that is transverse to the vehicle, - an opening in the holding device, said opening being configured to have a portion of the centring end of the column inserted into it, substantially along the direction of the guideway, the opening being delimited on a first side by a bearing edge configured to support a part of the weight of the column and to hold the column in a first inclined position, once the portion of the centring end has been inserted into the opening, the holding device comprising, on a second side of the opening diametrically opposite to the first side, a stop lip extending forward of the opening in the direction of the guideway so as to form a stop for the centring end during variations in the inclination of the column, characterized in that the column is suspended by the guideway device, about a horizontal axis (YY') that is transverse to the vehicle, before the portion of the centring end is inserted into the opening, the centring end of the column comprising a protrusion, the assembly being configured such that, for at least one angular abutment position of the protrusion against the stop lip, the protrusion lies in line with the opening along the direction of the guideway, the insertion direction of the protrusion lying in a vertical geometric plane which also includes the direction of the guideway and which also comprises the direction of the axis of the steering column.