thats a tough question. it seems a decently maintained stocker can do 90-200k, depending on maintenance and use. but, a modded(read heavy) sami will kill the longevity of an engine if not geared correctly. so, like i said, tough. i have had 8 sami's, built many ways, all with 1.3's. its all about gearing. but stepping up to a 16 valve is definately a better option!