Volvo d4 or d3 engine?

Hello,

Firstly let me say i live in Europe. We want to buy a new family car. We are looking at used volvo v60 cc or v90 cc (2020 onwards). This would be our first Volvo car. Majority of listed v90cc and v60cc are a D3 or D4 engine. I know that volvo warranty exipres after 3 years or 100k (a lot of listed cars are near this milestones). Are there any problems with modern Volvo (D3 and D4) engines or why are they selling them near end of warranty? Are the new engines durable? Are there any other Volvo problems i should be aware of?

Thank you for you answers and help.