MR3V/6V project name, for "Matériel Roulant 3 Voitures / 6 Voitures" (Rolling Stock 3 Cars / 6 Cars) are future rolling stock, to equip the new lines 15, 16 and 17 of the Paris Metro.

[6][7] On 20 September 2018, the contract was officially signed with Alstom for the manufacture of rolling stock for a total cost of 1.3 billion euros and, quickly, a sketch of the design of this rolling stock was unveiled.

[10] The exterior design of the trains was unveiled in early December 2018 with three variants.

A consultation open to the public took place during December 2018 to allow the choice of the chosen design.

After 20 days of consultation and 13,000 voters, it was the second design with "encompassing lines for the nose of the train" that was chosen by 40% of respondents.