Absolutely none, and neither had my 6'4" (size 13 shoes) son-in-law yesterday with a couple of hundred miles through Snowdonia and N Wales.
I keep an eye on my fuel consumption
here, although in the absence of their listing Ineos - I've had to "bodge" a suitable entry:
View attachment 7810921
Engine sound? Sorry I'm happy listening to the radio when I can get reception - the Gren radio aerial reception definitely is not the best - pisspoor by modern-day standards and expectations. Maybe just another software update is needed.