The 1978 iteration was the most successful fourth-generation release, with over 213K Cougars and 166K XR-7s, while the 1979 model year witnessed a drop to only 172K cars. The XR-7 demand remained ...

Mercury struggled to sell the Cougar, with the XR-7 also losing ground. The company sold only 72,363 units, and the XR-7 accounted for only 18,565 hardtops and 4,299 convertibles. The Cougar wasn ...