With sports mode engaged they'll have extra pops and bangs utilising fuel dump on over run or between up shifts.
Maybe for a TT V6 it doesn't sound bad, however coming from a N/A lineage it'll alway suffer. Think e46 and e92 M3 to F80 M3 - sound wise the older cats have it. I think manufacturers use artificial noises to give more character to an otherwise dull sounding oe exhaust.