Toyota has sold a total of 5.125 million hybrid vehicles globally as of the end of March 2013, the company announced Wednesday.
Representatives are calling the achievement a significant milestone. Initially, hybrid vehicles were met with skepticism, and analysts were unsure if the technology would ever catch on.
The manufacturer began selling the first mass-produced hybrid vehicle, the Prius, in 1997.
Hybrid vehicles fueled with gasoline and electricity increase fuel efficiency by alternating between a gas engine and an electric motor, depending on speed and driving conditions. The electric motor is recharged while the vehicle is moving.
Toyota hybrid vehicles account for 14% of the company's global sales and 40% of sales in Japan.
The manufacturer currently offers 19 hybrids and a plug-in hybrid.
It plans to roll out 18 new hybrid models by December 2015.
With files from the Canadian Press