By the time the G-Series was release, the standard engine was now 2.7-litres in comparison to 2.4 in the earlier model. 2.7 – 3.0-litre engines had been used earlier, but were reserved for motorsport models. The 154 kW Bosch/Kugelfischer-injected Carrera-engine used in MY1973 911 Carrera RS 2.7 was kept in production, but used only on the 911 Carrera models for European markets. The base model had 110 kW for all the markets and the European market “S” or Sports version had 129 kW. The importer for USA, Porsche+Audi division of Volkswagen of America, sold the European “S” in USA as Carrera.