MY AVEOS 2010 SEDAN 1.6 (103HP) THE OWNER´S MANUAL INDICATE PROPER -STOCK- IS NGK SPARK PLUG NUMBER BKR6E (calibration1.0 to 1.1 mm). I REPLACE WITH BKR15E AND WORK PERFECTLY. SOMETIME I PUT AUTOLITE IRIDIUM BUT I BEEN HAD PROBLEMS TO COLD START.