In North America, the Ford Sierra and the Ford Scorpio were offered under the now defunct Merkur brand.
The Sierra was imported as a three-door only, and called the XR4Ti (similar to sub-model designations in other markets).
The Sierra name was not used by Ford in North America; the market had already seen the similar-sounding Oldsmobile Ciera, and the Sierra name was used and trademarked by General Motors Corporation from the 1970s as a trim level on its pickup trucks.

The car was offered from the start of the Merkur brand in 1985 until 1989.
It was equipped as a rear-wheel-drive 2.3-litre SOHC inline 4-cylinder (commonly known as the "Lima" engine) equipped with a Garrett T3 turbocharger and fuel injection.

Although offering the top-selling XR model worldwide, the Merkur brand is claimed to have been a commercial flop.
The reasons vary.
Safety and emissions regulations in the U.S. forced Ford to make costly modifications, resulting in relatively high prices, coupled with the required addition of air bags for all 1990 and newer vehicles (not required in foreign markets) doomed the mark to an untimely end.
Exchange rates also fluctuated too frequently.
Moreover, since Merkurs were sold at Lincoln–Mercury dealers, many customers were more attracted towards Mercury models, such as the Mercury Sable, which were similarly styled and had similar equipment for significantly lower prices.
In North America, the Ford Sierra and the Ford Scorpio were offered under the now defunct Merkur brand. The Sierra was imported as a three-door only, and called the XR4Ti (similar to sub-model designations in other markets). The Sierra name was not used by Ford in North America; the market had already seen the similar-sounding Oldsmobile Ciera, and the Sierra name was used and trademarked by General Motors Corporation from the 1970s as a trim level on its pickup trucks.
The car was offered from the start of the Merkur brand in 1985 until 1989. It was equipped as a rear-wheel-drive 2.3-litre SOHC inline 4-cylinder (commonly known as the "Lima" engine) equipped with a Garrett T3 turbocharger and fuel injection.
Although offering the top-selling XR model worldwide, the Merkur brand is claimed to have been a commercial flop. The reasons vary. Safety and emissions regulations in the U.S. forced Ford to make costly modifications, resulting in relatively high prices, coupled with the required addition of air bags for all 1990 and newer vehicles (not required in foreign markets) doomed the mark to an untimely end. Exchange rates also fluctuated too frequently. Moreover, since Merkurs were sold at Lincoln–Mercury dealers, many customers were more attracted towards Mercury models, such as the Mercury Sable, which were similarly styled and had similar equipment for significantly lower prices.
Ford Sierra