Just Got a '21 XC40 – First Checkup & Strange Sounds! Thorough Inspection Advice?

[HiFiMan]

Hello, people!

I’m the new owner of a 2021 XC40 Inscription with 39,000 miles, preparing for its first dealership inspection and the 40k-mile maintenance.
I would like a super-thorough checkup, beyond the basics. I’d appreciate any insights from seasoned Volvo owners. I’m located in the Jacksonville/Savannah/Charleston area (Georgia).

Preventive Maintenance:

In addition to the standard 40k-mile service, I’m thinking about replacing the transmission fluid and spark plugs early. Are there other components—such as filters, fluids, belts, engine and turbocharger components, and AWD components—that you’d recommend replacing or inspecting at this point? I just want to make sure I know exactly what shape the car is in, and I want a clean start - as much as possible.

Current Observations:

Sequential Low-Frequency Hum: There’s a low, rumbling hum most evident at around 2000 RPM on smooth highways (less tire noise). It’s very low-frequency, making it hard to isolate. It doesn't create perceivable vibrations in the steering wheel, dash, or seat.
Steering Wheel Crackling/Crunching: A frequent crackling sound from the steering wheel area, especially on rough pavement. The exact location is hard to pinpoint, but it seems linked to road vibrations.
Rear Creaking: A plastic-like creak from somewhere behind me, noticeable over bumps and rough roads. It’s difficult to isolate the exact source.
Slight Braking Vibration: It had mild vibration during braking, which has become much less apparent since I first got the car (5 days ago).
Engine Vibration at Lower RPM: There’s a noticeable vibration between 1500 and 2200 RPM. It can be felt in the steering wheel. It’s less than in my old Nissan Altima but more than in the Acura RDX 2021 I drove recently.
If anyone has experienced similar sounds or has suggestions for other preventive replacements, I’d love your input. I would like to make sure the dealership covers all details and keeps my car in top shape.

I really enjoy cars that are well-groomed and mechanically correct.

Thanks in advance for your help—I’m excited to join the Volvo gang.

[scot850]

Having never owned a Volvo newer than now 20 years old (well 06 XC70), I can't give you specific advice for this model. What I can give you is generic advice where applicable.

Low frequency hum : Ask the dealer to take the car for a road test and you go with so you can help them 'hear' what you are hearing. You could also ask if you can test drive another car if they have a demonstrator car so you can listen if it is 'normal'.

Rear creaking : Now this can be isolated using modern tech. The dealer may have a a set of 'ears' that can be positioned and then they can listen to noises to help narrow in on the source area. Be aware, this can take time so you will being paying labor. Again you can try to see if you can replicate it while taking the car for a test run with the mechanic. You could try sitting in the rear do try to help narrow down the area of the noise.

Slight vibration in the brakes: If the car had been sitting for any length of time, there could have been a build up of rust on the rotors. This usually clears off after driving the car for a while. If it continues there may be a warped disc/rotor. Again the mechanic can identify when driving.

Engine vibration: Again ask a tech about it when being driven and then try another car to see if it is 'normal'. Some cars do have an annoying frequency which is not intentional but is there.

Just be aware that any tech time is probably going to cost. I used to ask the foreman to drive the car along with me as a passenger and typically there was no charge.

As for general servicing : Volvo used to have recommended servicing intervals for regular service items. However, there were also optional items that often they have recommendations for but as most customer cheap out, they don't even offer them. Trans flush is one of those as is AWD servicing. Ask them for what the recommendations are and then you can make a judgement call.

Either way, good luck with your new to you Volvo. Talking the one of the local Volvo dealer service managers about a week ago, I asked about the XC40 reliability. He was positive on the SC40 of being better than the other Volvo products.

Neil.