Even good cars only give the driver two speeds to monitor: engine speed and vehicle speed. And while it’s the engine that ultimately does the work to turn the wheels and move a vehicle, a lot goes on ...

The 5.1-liter twin-turbo V-8 that powers the Koenigsegg Jesko might just be the fastest-revving engine ever installed in a production road car. But according to founder Christian von Koenigsegg, that ...

Modern diesel engines perform exceptionally well at 1,100 to 1,200 rpm. They deliver peak torque just a few hundred rpm above idle, and peak horsepower somewhere around 1,500 or 1,600 rpm. But what ...