ambitionz

How much of an exhaust sound difference is there between the GT53 and GT63 if you get the amg performance exhaust option on the GT53? Apart from the difference in power and a v8 engine in the GT63, is there a significant difference in the sound or not that much? Thinking between a 53 and 63, just haven't driven or heard the 63 irl.

Flex6

The V8 is going to have a much deeper, lower, note to it and a bit more of that typical V8 rumble

W205C43PFL

As mentioned, the V8 will have a lower rumble. The i6 will have a higher pitch sound.
The easiest way in my opinion is to visit a dealership and test drive it (if there are available vehicles near you) or alternatively listen to the sound on youtube to have a better idea (just keep in mind in real life it will always sound way louder):

ambitionz

Great video post reply, thanks. Which would you prefer?

W205C43PFL

You're welcome glad it helps. Totally personal preference when it comes to sound but for me I will pick the i6 over the V8 (but I am sure pretty much everyone else likes the V8 more, like I said just personal preference really), no right or wrong decisions/answers.