你怎知車主沒撒謊？隻要車主沒報警報失那就不在被偷的範圍。你不懂，否則每個車主都可在借車出事後說沒同意借了

 車主說認識這人，說明這人是車主的朋友，不管車主承不承認借，都會被認為是同意借的。 一般來說車主的親屬朋友同事等開車主的車，不管車主同意與否都會被認為是經過車主同意的了。給你一段我從網上拷下來的對車主同意的定義：
“A trier of fact is allowed to consider the relationship between the owner and driver when direct evidence of permission (also known as “explicit permission”) is in dispute. It certainly appears more likely that permission was granted if the owner and driver are married, close friends,  or had an employer/employee relationship. A trier of fact is allowed to reasonably conclude that permission was granted even if the owner denies it and there is no direct evidence that permission was specifically given prior to the accident. This is called “implied permission,” in that it can be implied, perhaps due to the relationship or prior interactions between the parties, that permission was given, even though it wasn’t specifically stated.”http://www.stevendhillonlaw.com/home/vehicle-owners-liability-following-a-car-accident-identity-and-permission/