As my Acura 2011 RDX SHAWD is my first acura/honda product I'm researching what maintenance needs to be done. I've seen some videos/posts about Honda's needing to replace a timing belt every 150,000km.

I know the previous owned did no maintenance in the last 5 years, and the vehicle now has 385,000km. So does this vehicle have a timing belt that needs replacement? (Or is it a permanent timing chain)

 

The 1st Gen RDX has a timing chain. The V-6 Acura engines have a timing belt. It is usually spark plugs, water pump (if needed), valve adjustment (if needed), coolant, oil/filter change, and serpentine belt kit for 7 year or 105,000 miles (160km) service. I think it was around $600 to have all that done at the Dealership to my 08 RDX back in 2014.