What is Xr4ti?
A model sold by Ford Motor Company in North America under the Merkur nameplate. The car was made by putting a 2.3 Liter turbocharged engine into a European Ford Sierra XR4i.The car is easily recognizable by it's stock bi-plane rear wing.
Mechanic: What's the make and model?
Owner: Merkur XR4Ti.
Mechanic: I'm sorry, we don't have parts for it.
Owner: But, it has the same engine as a Turbo Thunderbird.