@ ~50Kmi, I'd likely do all the fluids except coolant. I'd either DIY the fluids for the transmission, transfer case and differential, or pay a shop to do it. I'd do the air filter and cabin air filter, if they're 'dirty'. It's a bit early, but I might even do the spark plugs (an easy DIY task). I'd have a good suspension shop give the suspension bits a good hard look, just for peace of mind. And I'd ensure the brakes are in great working order.
Myself, I purchased a 4yr old CX-5 with not quite 80Kmi on it. Am now at north of 130Kmi.
Immeditely put on all-weather tires, given the tires were 3-season summer oriented, and I had to contend with winter traction.
Basically, whatever standard (owners manual) maintenance I didn't find records for, I then did.
Changed the fluids (coolant, oil+filter, transmission, transfer case, differential, brake). I suspect the prior owner (a retired engineer) had done these himself, DIY at home. Put in new wiper blades. Did the spark plugs. Should have done the serpentine/accessory belt and tensioner, but didn't and found it snapping and needing replacement several thousand miles later.
Have done the brakes, one end at a time, as needed. Every couple of years, one of the ends, so I also flush/bleed the brake fluid.
Several months back I had some issues with consistent firing. The spark plugs and coils were swapped and tested; ended up replacing them all. Was over 120Kmi, so it wasn't altogether unexpected. A bit early on the 2nd set of plugs I installed, but wanted to go to the NGK Ruthenium HX anyway.
Last year, did the front suspension's lower control arms and tie rod ends, as they'd started lightly 'clunking' around slow-speed corners. A couple months ago, had the A/C refrigerant recharged. For several tanks of gas, now, I've been adding a bottle of Chevron Techron, to get rid of fuel system and combustion chamber deposits 'normal' gas fill-ups haven't caught, mostly to aid in eliminating an intermittent code P0300 CEL condition and low-idle condition (which has since disappeared).
On two occasions since purchase, for elimination of a musty/moldy smell I've squirted a couple of kans of Kool-It up the A/C drain hose, into the A/C 'fins'. Worked well. Next year I will likely do another can or two of the stuff.
Next year, I'll probably get to the anti-sway bar control links, other suspension arms where the bushings are showing some weakness.
In my case, I'd call most of that good preventive maintenance. Though the owner's manual doesn't necessarily recommend all of these things as early in the schedule as I have done them, I found keeping ahead of maintenance has helped the car continue to run in top shape and without annoying clunks and rattles so common with other less well-maintained vehicles. I would say that my own car needed the fixes. Many won't, at the same intervals, if all the stars align.
