Purchased 5 days ago. Was driving all day then it randomly started bogging down at 3k RPMs. I took it to shop, codes were p0011 and p0159 and a cat code. So I spent 700 on new cars. Now it not only still does it, ( keep in mind there has been no check engine light thus far) but as of this morning there’s a check engine light AND it was bogging down in park at 2k. So I’m scared to even move it now. Infinit dealership said it’s the cam sprocket . 4 other shops said, the cam belt , and sensors and I just can’t figure it out and I’ve already spent 1k on a car I just bought ( and FYI no I can’t sue dealership , well I am going to but it’s gonna take months AND it’s my fault I didn’t take car to mechanic before I purchased )

 

I did a full tune up and changed oil .

 

I can relate. I bought my 2011 g37s coupe at 126k miles and today while in the drive thru, my car started revving and accelerated a foot while I had by foot on the brake!!! I had to depress the brake and press the brake to make the car stop. I have no idea why the car did that. I hope I don't have a brake failure. The drive thru person freaked out.
Thankfully no one was in front of me but I'm going to have to take the car into a brake shop to have the brake booster and vacuum examined ((

 

If that happens again throw the car in neutral. At least if it is a brake problem the car won't be trying to push any more.