A lot has changed on this car since they unveiled the concept. It no longer looks like a baby Valkyrie, no longer a limited edition to 500, no longer costs $1,300,000 (around $800,000 now), no longer has a V6 turbo...
It's got the 4.0-liter twin-turbo V-8 from AMG GT Black Series. It will be supplemented by two electric motors, one powering the front axle and the other blending assistance with the combustion engine at the rear through the transmission. Together Aston says these can add up to 200 horsepower, making for a peak combined output of 937 horsepower. The company is promising a 2.5-second zero-to-62-mph time and a 217-mph (around 349 kph) top speed and says the car is on track to deliver a 6:30 lap time of the 12.9-mile Nürburgring Nordschleife. (The current production-car record there is the 6:43.3 recently set by the Porsche 911 GT2 RS.) The target dry weight is 1550kg.
Here's how the concept looked like