2006 E91 325i question

Hi guys,

I am going to have a look at an E91 325i Touring. The car is a 2006 with 90,000 miles. I assume this has the N52 engine.

I am not very familiar with these cars, is there anything I need to watch out for?

Is the N52 engine reliable or do they give problems?

Thanks in advance.

Regards,

Bayerische