E90/E91/E92/E93 (2006 - 2013)
Hi all , I am looking to purchase a 2007 335i coupe with about 34k miles on it from a dealer . When I started the car ( engine was cold though ) , there was grey smoke coming out of the right exhaust pipe and then after 2 minutes started coming out of 2nd tail pipe as well . Both the exhaust...