Stellantis warns a chip shortage will disrupt Fiat production in Italy through December
The missing part, used in the control unit of the N3 GSE engine, cut Fiat Pandina output and pushed Stellantis's monthly volumes in Italy into decline for the first time this year.
Stellantis said on 2 November 2026 that a supplier's failure to deliver a component for the engine control unit of its N3 GSE engine caused severe production stoppages on some Fiat models in October. In a statement on the Italian market, the carmaker said the problems could continue in November and December, especially at Pomigliano d'Arco near Naples, where the Fiat Pandina is built, and at Mirafiori in Turin, which makes the Fiat 500.
Reuters reported that the missing part is an electronic chip and quoted the company as saying that Stellantis and Fiat are "working with the highest priority to identify alternative solutions and gradually restore normal operations".
What happened in October
According to Stellantis, the shortage hit October volumes and market share in Italy, which for the first time were negative in a single month. The impact was particularly significant on the Fiat Pandina, one of the brand's best-selling cars. The company did not name the supplier.
Despite the disruption, Stellantis said the Pandina was still Italy's best-selling car in October with 7,198 registrations. The Italian car market grew 4.8% year on year to 131,921 registrations in the month. Stellantis registered 31,865 cars including its Leapmotor joint venture brand, a 24.2% share, or 23.0% without Leapmotor. La Repubblica reported that the group's October sales in Italy fell 5.5%.
The bigger picture for the year
Over the first ten months of 2026, Stellantis says it registered 411,825 cars in Italy including Leapmotor, up 12.1%, for a 29.4% share. Fiat alone had 156,734 registrations, up 27.2%. Leapmotor has passed 30,000 registrations in Italy this year and holds an 11.5% share of the battery-electric segment there, according to the company.
Which plants are at risk
Reuters reported that the shortage could also affect Stellantis plants in Italy that make engine components, including Termoli, where the N3 GSE engine used in both the Pandina and the 500 is assembled. Mirafiori is already in a three-week production halt that began in mid-October because of a separate component shortage, and unions have pointed to weak demand for the Fiat 500 as one of the reasons. Sky TG24 also reported possible stoppages at Mirafiori and Pomigliano.
Why it matters
Italy is politically sensitive for Stellantis. Pomigliano and Mirafiori are two of its best-known Italian plants, and the government and unions have pressed the company to keep production and jobs in the country. Any new stoppages would come on top of a difficult year for European carmakers, which have faced weak demand in China, US tariffs and costly electrification. We covered the pressure in recent results from Volkswagen, Mercedes-Benz and Audi.
It also shows that the semiconductor supply chain remains fragile for the auto industry. Engine control units depend on chips that are often single-sourced, and one missing part can stop an entire assembly line. Chipmakers that serve carmakers, such as NXP, have been reporting recovering demand, but that does not prevent shortages of specific components.
What it means for European founders and investors
Supply chain visibility is a real market. Carmakers still often learn about shortages late. Startups that map multi-tier suppliers, predict disruptions or help qualify alternative parts faster have a clear use case, and this episode will strengthen their pitch to procurement teams.
Second sources and local production. European policy is pushing for more chip production in the region. For founders in hardware and automotive electronics, designing products that can use components from more than one supplier is becoming a selling point.
Watch the suppliers. Disruptions at large carmakers flow down to hundreds of Italian component makers. Investors in the Italian supply chain, which is also adjusting to the Tata Motors takeover of Iveco, should watch for knock-on effects on orders in the fourth quarter.
What happens next
Stellantis says it is working with its suppliers to restore full production gradually, but has warned of effects in November and December. Its next market update in Italy will show how far the shortage hits year-end volumes.
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