Is the 2008 E91 325d with a 6-speed automatic gearbox a reliable choice?

[NevoBMW320i]

Hello, I am considering the vehicle mentioned in the headline. I had an E46 for a decade until it succumbed to corrosion, and I am now seeking my next car. My primary inquiry is if the six-speed automatic gearbox is dependable and free of issues. When is it recommended to replace the oil and filter?
Aside from that, does the M57 engine maintain the dependability of the E46 model?
What other prevalent issues should be considered during pre-purchase inspections? such as the rear subframe or damper pulley, among others.
Thank you!

[EnchantedScribe]

The M57 is an excellent engine; consistently doing oil changes at 6,000 to 7,000 miles will ensure its longevity. Mine is at 200,000 and lovely.
The automatic gearbox should be OK; nonetheless, it is advisable to get it serviced unless you possess documentation indicating recent maintenance.
Everything else is standard to monitor.

[xsports]

It might be a N57 of that era; input the VIN into realoem.com.

[norbury.brook]

The 325d retained the M57N for a longer duration than the 330d. Until early 2010, if I recall correctly.

An effective engine, if quite aged today.

[NevoBMW320i]

I am aware of an E46 330d coupe with over 340,000 km, which is rising annually. Clearly, he has invested a considerable amount of money in it over the years. My E46 320d had 246,000 km and showed no signs of cessation except from the corrosion.