The company, which is now known as Stellantis NV, in January 2019 agreed to an $800 million settlement to resolve civil claims that it used illegal software which produced false results on diesel-emissions tests in more than 100,000 vehicles. The Justice Department's criminal investigation into the company is pending.
Ferdinando Uliano said FIM CISL was asking the company to meet its target to start (Tonale's) production by the end of this year.
"We want to be on the market with the most updated electrified offer, leveraging on the Stellantis technology and know-how. Our teams in Pomigliano are strongly working to update the production line," it said.
As part of its plan, Stellantis has said it would increase the number of hybrid or fully electric vehicles to 40 models by the end of this year from 29 now.
Stellantis plans to have fully-electric or hybrid versions of all of its vehicles available in Europe by 2025, broadly in line with plans rivals such as Volkswagen and Renault-Nissan.
The company said the European market staged a strong recovery in the second half of 2020, jumping 40 percent compared with the first six months when governments imposed strict lockdowns to try to control the first wave of Covid-19.
The 50/50 tie-up, which was delayed by the Covid-19 pandemic, is seen as crucial for the two groups to undertake the investment needed to transition to clean car technology.
Officials did reveal an agreement with the Polish government to provide "FCA with the possibility of taking advantage of tax reliefs in the field of (CIT."
Fiat Chrysler's Italian division and Engie EPS, which is also based in Italy, have entered into a memorandum of understanding aimed at setting up the joint venture in the first quarter of 2021.
Shares in Engie EPS, which is being advised by Lazard on the deal, were trading 13% higher in Paris.
The Italian-American car maker on Wednesday said it posted adjusted earnings before interest and tax (EBIT) of 2.28 billion euros ($2.7 billion) in the July-September period.
Our record results were driven by our team's tremendous performance in North America.
It also cut capital expenditure across the group, and expects to reduce the total for the full year by 1.5 billion euros ($1.8 billion) to 8-8.5 billion euros.