Finally got around to changing my spark plugs on my 1.4L cruze and after reading the recent post about the guys engine that blew up and the dealer said it's not covered under his warranty because he had the wrong spark plugs--I decided to check further into the Autolite XP3923 plugs rockauto lists--as of today-- for the 1.4L engine, turns out after looking on autolite's web site for the 1.4L turbo it takes a Autolite XP3922 for the 1.4L turbo and the Autolite XP3923 is for the non turbo 1.8L, called Autolite and they confirmed rockauto has the plugs switched AND even though the plug info says both the plugs are the same heat range they are NOT and the XP3923 plugs are a hotter plug and should NOT be used in the 1.4L turbo engine, he said it would only matter having the hotter sparkplug under wide open throttle---exactly what the new emission recall is about, further questioning him he says take a picture of rock autos WRONG spark plug listing--incase I DO blow my motor over the wrong plugs being in it !!! soooo you might want to check what plugs rockauto sold you--especially if your running a tune !! and I was not happy rockauto will only refund the price I paid for the WRONG spark plugs--their mistake-not mine--and I now have to pay to reship the right spark plugs !