The wait for the extraordinary Mercedes-AMG One hypercar has been agonizing. It's already been four years since the concept debuted back when the F1-inspired hypercar was known as the Project One. In addition to the global pandemic, technical setbacks have delayed the car's development, but the wait is nearly over.

Customer deliveries for the AMG One are currently on track for the third quarter of this year. In the meantime, Mercedes-AMG is currently finetuning prototypes. A few weeks ago, an AMG One prototype was spotted being put through its paces at the Nurburgring.

Now, our spy photographers have sent us new photos showing the AMG-One fitted with production parts for the first time as it was spotted tackling picturesque mountain roads.

Compared to our last sighting, the placeholder taillights have been updated with the final production units, which feature slim LEDs. The front fascia has also been updated with sleek-looking production LED daytime running lights. Since the AMG-One was being driven at lower speeds, the active rear wing is lowered and the vents on the front fenders are closed in contrast to the prototype we saw at the Nurburgring. Unlike the last prototype, this AMG One is uncamouflaged, with only a motorsport-style livery disguising the production body panels.

Its extreme aero components are fully on display, giving us a better look at the racing-inspired roof scoop and shark fin, a prominent front splitter, and air vents mounted in the wheel arches.

Powering the Mercedes-AMG One is a turbocharged 1.6-liter V6 derived from the Mercedes F1 car and four electric motors. Combined, this setup produces producing a monumental 1,200 horsepower. The powertrain is so extreme that Mercedes has been struggling to meet emissions regulations, but adapting a race car engine for a road car was never going to be easy. Production is limited to 275 examples but every one of them has been sold out, despite the $2.7 million price tag.