Carscoops crunched the numbers and a Mercedes GLE 350d Coupe costs as much as a stock AMG 63 S. TopCar-tuned GLE 350d Coupehas an asking price of 6,750,000 rubles, about $113,206 and the 2017 Mercedes-AMG GLE63 S sells for $110,650 in the US.
Well that depends on what your reasons are for buying, someone who was originally interested in the 350D was interested in it for a good reason, that reason being very different from someone who wants a 63 S.
If you're in this for the long term and need a commute then of course the 350D will be it.
End of the day, both models attract very different buyers.
When it comes to engines, everyone goes with a certain one for very specific reasons. No one goes in looking for a diesel and decides "yeah, why not, this gasoline engine is good enough, we'll take this one"
In a case like this, being a diesel, just the ability to have a long distance commuter with great range is enough to justify the purchase. Yes you might be paying more up front but 4-5+ years into ownership you'll tank yourself.