Motor vehicle with air guiding means and method of making the same

A motor vehicle comprising,

• a trunk lid having a rear transverse edge;
• an air guide extending across the width of the vehicle, the air guide adjoining the rear transverse edge of the trunk lid, wherein the air guide includes a slotted wing system having a rear wing displaceable between a retracted rest position and a deployed active position and having a fixed rear-deck spoiler lying below the rear wing;
• and
• a lower rear end panel including a continuation that runs beneath the rear transverse edge of the trunk lid, wherein the continuation has a shallow trough which runs across the vehicle width and which at least partially accommodates the rear wing when the rear wing is in the rest position, and wherein the rear-deck spoiler has a hump disposed across the vehicle width on the lower rear end panel wherein the rear-deck spoiler adjoins smoothly the bottom of the trough and projects above the transverse edge of the trunk lid, and a section of the bottom of the trough under the transverse edge of the trunk lid.