A 1600 cc engine joined the range in 1979.
In 1981, the Lancer Fiore, not to be confused with the regular Mitsubishi Lancer, was launched. The Fiore was a four-door version of the Mirage. At the same time, the range was facelifted.
In 1982, a turbocharged, 105 PS (77 kW) version of the 1400 cc engine was made available.
In many countries, this car was known as the Mitsubishi Colt. In the United Kingdom, where Colt was the marque, it was called the Colt 1200 and Colt 1400, after the size of the engines, which it shared with the larger Lancer.
Since most overseas markets did not have the Minica keicar, the Mirage was the entry-level model.
Local CKD assembly of the Mirage took place in New Zealand by the Todd Motor Corp., where there was a sports equivalent called the Mirage Panther in the early 1980s. The replacement Mirage Turbo had the distinction of being that country's first locally assembled turbocharged car from 1982.
The facelifted model was also built by Mitsubishi of Australia, and had an unusually long model life, from 1981 to 1990. The Australians offered the Colt with the 1.4 L engine, and a larger 1.6 L. This model was imported for a short time to New Zealand in the late 1980s, where it was sharing showroom space with the locally assembled third generation models.