Some cars, mostly fuel-efficient models like the Toyota Prius family, Nissan Leaf and Ford Fusion Hybrid, have done away with a tachometer altogether, but automakers are also incorporating new ...

Some cars, mostly fuel-efficient models like the Toyota Prius family, Nissan Leaf and Ford Fusion Hybrid (pictured below), have done away with a tachometer altogether, but automakers are also ...

Porsche also still uses beautiful analog tachometers in all its cars, save the all-electric Taycan. What's frustrating is that these automakers could create non-traditional, ...

If you have an older car that didn’t come from the factory with all of the important gauges, or you own a new car that you’ve improved enough that you need better readouts for things like ...

Many cars have a tachometer to indicate engine rpm, usually measured in thousands. At the top of the tachometer range is a zone called the redline — usually highlighted literally, with a red line.

Digital gauges first started showing up in 1980s cars to varying degrees of success. Automakers pushed hard for them, but the trend all but died in the 1990s. In the 21st century, though, digital ...

All vehicle tachometers will have a redline that typically begins at the 6,000 to 7,000 mark. The redline is the maximum RPM rate the engine could turn at, and is the maximum safe operating zone.

Q: For many years I've been wondering why so many vehicles have an RPM dial when no one uses it. What purpose does it have, and who benefits from using it? It takes up a lot of space on the ...

Q: My Ford had a dead battery. When I jumped it, the speedometer stuck at 160 miles per hour and the tachometer is stuck at 6,000 RPMs. What can I do? Car Doctor: How to spot a 'flood' car before ...