Fiat Chrysler Cars and France’s PSA Group introduced final October intentions to mix the automakers into one large conglomerate, and since then, it has been easy crusing by the regulatory course of — till now.

Reuters reported Monday that the merger has hit a pace bump as European regulators combed over FCA and PSA’s small-van market share. Based on the publication’s sources, regulators would require concessions to make sure extra competitors throughout the small-van phase in Europe. Knowledge reveals FCA and PSA, which already collectively produce vans below a 50/50 three way partnership, maintain 34% of the market.

The automakers had been reportedly instructed concerning the regulatory considerations final week and got till this Wednesday to supply adequate clarification or ship a modified plan to regulators. If the businesses do not, each automakers will face a four-month-long investigation after the preliminary merger overview ends. The European Union gave a June 17 deadline for the preliminary overview to wrap up.

FCA declined to touch upon the information and PSA did not instantly return a request for remark.

It would not sound like the difficulty has the potential to derail the merger plans, but it surely might actually stall issues. Each automakers agreed to mix their firms in a 50/50 merger of equals to sort out a shifting automotive business. Notably, FCA had lengthy courted automakers to redouble its efforts and consolidate throughout the business.

With the merger, the FCA divisions, Jeep, Dodge, Chrysler, Ram, Fiat, Alfa Romeo and Maserati will be a part of PSA Group’s household of manufacturers below one roof. They’re Peugeot, Citroen, DS, Vauxhall and Opel. These final two PSA lately bought from Basic Motors within the US automaker’s retreat from Europe.