Heavy vehicles need many gears because their engines deliver peak torque within a limited RPM range, usually between 1000 and ...

Increasing gear counts in an automatic transmission improves fuel economy by reducing engine RPM during cruising, but has ...

If you're driving a manual-transmission car, you may be wondering when to shift gears to get the best mileage. There's a ...

A transmission changes gears depending on speed and accelerator input (i.e., how far down you push the pedal) so that the engine’s RPM or “revolutions per minute” are kept appropriately low. This ...

First Gear: A Wednesday morning shakedown as a Daytona ... on the cusp of another possible change in NASCAR’s fuel supplier. This season is the last for Sunoco in its current deal as the ...