Alfa sit in P8 in the constructors' championship as it stands, after a relatively inconsistent season so far, but Vasseur believes the team can secure a double points finish in Japan at the weekend.
"We head to Japan with the commitment and motivation to get back into the points immediately," Vasseur said. "We must not forget we have been scoring in two of the last three races, so putting both cars in the points is a realistic objective; but we still feel there is more we could have brought home from the last few races.
"The track layout in Suzuka is quite different from Sochi and Singapore, so hopefully it will suit the C38 better and put us back towards the front of the midfield. Both trackside and at HQ, we need to keep working hard to extract the most out of our car: marginal gains is all there is to go from P12 to P7 in a race at this stage in the season."