One problem related to engine exhaust system has been reported for the 2011 Buick Lacrosse. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Buick Lacrosse based on all problems reported for the 2011 Lacrosse.
The 2011 Buick Lacrosse with a 3. 6 had popping sound upon starting when car was 5 days old; brought to dealership and was asked if I was sure it was my car. They checked vehicle and could find nothing wrong. The problem is intermittent. It popped upon starting 8-9 more times in 3 weeks. Upon leaving a restaurant, the vehicle would not start & had no power; onstar was of no use. Dealer had car towed to them; kept car for 10 days and put 160 miles on it and I was told that they reprogrammed 3 computers but could not replicate the popping sound. I picked up my car and discovered that it had been hit whille at dealership. Dealership had car painted. I got my car on Tuesday, Thursday it popped twice. Returned car to dealer again. They told me to pick car up that they could not find a problem. They found that the exhaust expanded upon starting and made a poofing sound. They said that there was nothing more they could do. I have been in touch with Buick executive offices. The car has 1087 miles on it. It had 287 when I purchased it and they put 160 miles on it when they had it. I've only had the car 6 weeks and 2 of those weeks it has been in the shop. They refuse to give me another vehicle like the one I have or give my money back. What options are left?? lemon law. I don't really want to do that. I love the ride of the car and the features, but I cannot enjoy it at all and do not feel safe driving it.