The 2025 Volkswagen Jetta comes equipped with a 1.5-liter turbo inline-4 engine that pushes out 158 horsepower. However, gone ...

In our tests, we've found that in some cars a manual transmission can improve gas mileage by a significant 2 to 5 mpg, compared with an automatic, and can cut a car's price by $800 to $1,200.

[Ben] bought a remote starter for his car but needed a way to make sure the manual transmission was in neutral when starting. He built this infrared sensor frame to detect the position of the stick.