The Civic Del Sol SiR received acclaim in Japan as one of the first naturally aspirated mass production cars to output more than 100 PS per litre and the first with an electronic targa roof (Transtop model). During its debut on Japanese car show "Best Motoring" reviewer Keiichi Tsuchiya declared the Del Sol SiR to be the most important Japanese sports car for a decade. Performance specifications for the Japan Domestic Market SiR give the two-seater a 0-100 km/h (62 mph) time of 7 seconds and a standing quarter mile time of 14.7 as reviewed by "Option" magazine in 1992.