The jerry-rigged turn signals inside the headlight enclosures and on the front fenders on the prototype are replaced with more polished units inside the headlamps located underneath the main beams. Behind that, the door handles have been swapped from horizontal latches on the door to vertical openings located just behind the door shutline.
We've also seen a Martini-liveried version of the 918 Spyder that has extra carbon elements that don't appear on this car. It was at the Nürburgring with carbon lips on the front fenders and another carbon element that hung from the rear fenders and ran down to the rear diffuser. When we saw the car on our Deep Dive piece, the front lips were gone but that rear piece remained, and we can't tell from the brochure and options sheet that we've seen so far what it comes with. The wheels from the concept and the green brake calipers, minus the polycarbonate covers, should be the standard fitment while the ten-spoke magnesium wheels will be a 29,750-euro (about $39,000 US) option.