v6 c class

So just got my first ever Merc this week and it's a C350 CDI. Really loving it after getting a few things sorted, but I've noticed that it seems quite tame for a V6. Sounds like it's missing some grunt. Is that only achieved with an expensive exhaust upgrade? :eek:

Hello, I had a look at this V6 earlier this year and its a stunning engine. Wonder why MB discontinued this. What is the take on the C350 Diesel? Thanks