Koenigsegg Agera R $1,600,000. The Agera R goes from 0-60 mph in 2.8 seconds, reaching a maximum speed of 260 mph (418 km/h). It is capable of reaching 270 mph, but this supercar is electronically limited to 235 mph (378 km/h). You will need to sign a waiver, only then does the company unlock the speed limiter.