Many Drivers Don’t Know Why the Mysterious “Overdrive OFF” Button Existed—and Why It Disappeared
Older automatic cars had an Overdrive OFF button, but modern transmissions no longer need it.
Why They Stopped Making Compressor (Kompressor) Engines If They’re More Reliable Than Turbos
Supercharged engines offered instant power, but stricter emissions and efficiency demands shifted automakers to turbocharging.
How to Properly Install Spark Plugs to Boost Fuel Economy and Engine Performance
Correct spark plug installation can improve engine efficiency, prevent damage, and even lower fuel consumption.
What That White Residue on Your Oil Filler Cap Means — and Whether You Should Worry
White residue under the oil cap worries drivers, but it doesn’t always signal trouble.
Some Drivers Are Drilling Holes in Catalytic Converters to Boost Engine Power
As performance fades over time, some drivers attempt risky tricks to restore lost engine power.
Five Simple Signs Your Automatic Transmission May Be About to Fail
Several common warning signs can signal automatic transmission trouble long before a costly breakdown occurs.
“What’s That Strange Hum?” Three Common Causes of Wheel Noise That Aren’t Suspension Problems
Every driver knows a car isn’t supposed to make unusual noises—at least not from parts that should be working quietly under normal conditions.
Many American Drivers Don’t Know About This: What the TCS OFF Button Does and How the System Works
The TCS OFF button is often located near the automatic shifter, but many drivers don’t know its purpose.
Six Ways to Increase Your Car’s Ground Clearance: Spacers, Spring Buffers, and New Suspension Springs
Many drivers want more ground clearance for off-roading, rural roads, or simply for fun and style.
Automakers Warn U.S. Drivers: Don’t Randomly Turn the Auto Hold System On and Off
Many drivers today don’t even realize how much of the routine work behind the wheel is handled by electronics.
How Long Periods of Inactivity Can Harm Your Car: What Breaks First and How to Prevent It
A closer look at what happens to every major system in your vehicle when it sits too long—and how to avoid the damage.
Japanese Engines That Can Easily Run 300,000 Miles Without Major Repairs
Modern engines are incredibly complex, but several Japanese designs have built a reputation for durability that allows them to run hundreds of thousands of miles.
Advice from a Veteran Mechanic to Everyday Mechanics and Drivers: 5 Components to Check First This Spring
As temperatures rise, drivers should pay close attention to vehicles that endured a harsh winter of cold weather, road salt, and extreme temperature swings.
What “DOHC” on Your Engine Cover Really Means—and How It Differs From SOHC
Pop the hood on many modern cars and you’ll likely see large letters spelling out DOHC right on top of the engine.
Helpful for Many Drivers: Mechanic Explains What Really Causes Sway Bar Links to Fail
Sway bar links are among the most common suspension components to wear out — but not everyone understands why they fail or how long they’re supposed to last.