Three engine options will be available from launch - the 1.6 4-cylinder and turbocharged and naturally aspirated versions of the 5-cylinder 1.8. Entry level 1.8 model costs £15,797, while the flagship 150bhp 1.8 T Sport is £18,270. Prices:A3 1.6 - £14,205, A3 1.6 Sport - £15,788, A3 1.6 SE - £16,390, A3 1.8 - £15,797, A3 1.8 Sport - £17,381 A3 1.8 SE - £17,984, A3 1.8 T Sport - £18,270.