You are likely due for either the 40,000 mile service (Inspection, Cabin, Engine filters, brake fluid exchange, and oil change) or a 50,000 mile service (oil change & smaller inspection)

Any competent mechanic can do the services, I would specifically request they change the brake fluid, as a lot of independents never do for some reason. I would also recommend seeking out someone knowledgeable on late model Volvo's, if you have the intention of keeping this vehicle long term, having someone in your corner that knows their gotchas will help.

You can take it to a retailer for software updates, but do not expect them to do it unless you ask, and they will likely charge you on top of whatever service charge is.

 

I would take it to Volvo for the 40k service (maybe sans some of the things you can do yourself?) and a sunroof drain cleaning (good preventative practice). Oil changes and filters, of course, aren't worthy of trips to the dealer... but it is good for a car, in my opinion, to go there every so often.

 

Lots of good DIY on this site. I recommend DIY if you can. But if not, take it to a shop that has knowledge of Volvo’s. Please do not take it to a jiffy lube place. These cars are both simple and complicated. Having some low wage lube tech cranking on the oil filter housing or using the incorrect oil and under/over filling it, or failing to use the crush washer on the drain plug - all are possible. These could lead to catastrophic failure.

Depending on the build date of your car, it’s possible you’re at rhe 6 year/60k service too. That’s an oil change and spark plugs. Both are very easy DIY. Here are some DIY’s that apply to your car:

Oil change:

SPA XC90 DIY Oil Change with pics

SPA XC90 DIY Oil Change with pics, UOA I did an oil change on our 2018 XC90 at 5k miles, these steps and pics should apply for any 2016/2017/2018/2019 vehicle. [This thread is for those interested in doing the oil change, not intended to start a holy war. Head over to BITOG for that :D] See...

www.swedespeed.com

Spark plugs:

Cabin air filter:

DIY: Cabin Air Filter Replacement

I like to replace cabin air filters often so I figured this time I'd get a few photos so if anyone wanted to tackle this one themselves it may help. The Cabin air filter is located on the passenger side behind the glove box. You access it from under the glovebox. Step 1: Remove this plastic...

www.swedespeed.com

Consider the transmission fluid every 50k if you’re keeping it long term:

 

OP - as others have mentioned, a mix of DIY for simple items and use of a trusted independent (preferably with late-model Volvo expertise) for things you can't do (or don't want to) is a sensible path forward. no reason to do anything different with the Volvo compared to your stated SoP for dealer vs non-dealer services.

while in warranty, i try to use the dealer infrequently to stay in their good books for potential warranty work, especially for services where the cost difference is marginal between them and an independent. such as brake fluid exchange, as i had the dealer do last year while in for some warranty work. dealer cost was ~$140, independent would have been $120 or so (this is CAD), so i tossed the work to the dealer to build some political capital for if/when it comes in handy down the road.

 

I would take it to the dealer the first time so you can find out how outrageous their prices are. Then you can start finding an independent shop to work on it for you.

 

Indy or your driveway. There's a booklet you should have that explains everything that you need to do. If you didn't get it, get one from Volovcars.com under the owners section. Dealers are expensive because the labor rate is so high. Look at the 40K there's a lot of Inspect this and inspect that"...that takes time. So the $220 oil change is going to be $500. Now these inspections do sometimes find things TO BE FAIR...BUT OFTEN THEY DOON'T AND JUST COST YOU MONEY.

 

Out of warranty - A good indy or yourself.
In warranty - I decided Volvo would have NO excuses to not fix my CPO car, no one else but them has ever touched it. When I needed the big $$$ ring job, they stepped right up. I can't say what they would have done had I been doing all the services elsewhere, but I was happy enough to not have to fight them over it.

 

With a T6 I would be comfortable with an Indy or DIY. The service schedule isn't anything crazy. My biggest concern would making sure the correct engine oil goes in.

Personally, I ended up going the dealership route. I pulled the trigger on a prepaid maintenance plan through Steingold Volvo. Saved some good money as the local dealership here in Southern California was more expensive if I did pay-as-you-go there.