S15

S15 is a designation used in various contexts, most prominently as a model name in automotive circles. The Nissan Silvia S15 refers to the sixth and final generation of Nissan’s Silvia sports compact, produced in Japan from 1999 to 2002. It represented a distinct styling and engineering update over prior generations and became well known in car culture for its blend of performance and tunability.

In terms of specifications, the S15 is commonly equipped with a turbocharged 2.0-liter inline-four engine (the SR20DET in higher-spec variants), rear-wheel drive, and a range of trim levels that affected equipment and tuning potential. The platform emphasized handling and balance, contributing to its popularity in motorsports and as a platform for street performance projects. The S15’s availability varied by market, with road-going variants tailored to regional emissions and homologation requirements.

Beyond the Nissan use, S15 serves as a general designation in other industries to label models, project codes, or parts. Because S15 is employed in multiple domains, its precise meaning is highly context dependent and, in many cases, requires domain-specific clarification. See also disambiguation resources to identify other uses of the S15 designation in fields such as electronics, transportation, or engineering.