ince the R30 was very successful, Nissan did not change much of the outward appearance of its successor, the R31 series. At its debut in 1985, the "Seven, as it was commonly referred to, was introduced in 4-door sedan and 4-door hardtop bodystyles, the hardtop not having B-pillars. Due to the popularity of luxury cars, this Skyline was aimed at the luxury department and seemed to have lost its focus on sportiness. The base model was the 1800I, powered by the CA18S with 100 hp.