A local Volvo dealership is selling a 2017 V90 T6 Polestar with 75,000 miles on it. It was a trade-in from a previous Volvo owner. It looks to be in great shape but I'm currently driving an '09 XC70 T6 so this would be a different world for me. I'd like some feedback on the following from all you experts out there, please.

1. Assuming the timing belt has not been replaced, how long can I wait to replace it?

2. Are there any known issues with the 4C suspension in this year/model?

3. Are there any other known issues that I need to be watching out for?

4. I'm a little nervous about a supercharged and turbocharged engine....anything to be concerned about there?

5. I will be visiting the dealership tomorrow....if there is anything I should look for, please let me know

Also, in regards to the Polestar Engineering, what type of enhancements were done and are they same for ALL models? I wasn't sure if they all came in one package.

Thank you, in advance!