The 100 Series are a series of underground railway cars manufactured by Alstom in Brazil and Argentina for use on the Buenos Aires Underground. They are used on Line D of the network, where they make up the vast majority of the fleet, serving alongside some 300 Series and Fiat-Materfer cars. Since 2019, some units have also been used on the Line E.[1]
Originally, the purchase consisted of 80 cars for a total of 16 trains made up of 5 cars each, due to the shorter platform length on Line A. However, 16 more 100 Series cars were purchased up until 2009, making a total of 96 cars and allowing each train to have 6 cars, making full use of the line's platforms.[2]
In 2015 the cars began to receive a mid-life refurbishment, primarily to add air conditioning, but also incorporating enhancements to the interior such as improved lighting and new upholstery.[3] Despite enjoying a successful service life, they are also the noisiest cars on the network.[4]
Between 2017 and 2019 New Alstom 300 Series cars replaced the Fiat-Materfer cars and serve alongside the existing 100 Series cars.[5]
