20 Myths About Cars That Are Not True At All

Cars are an essential part of our daily lives, but they’re also surrounded by numerous myths and misconceptions.

From claims that engines need to warm up before driving to the idea that bigger cars are always safer, it can be challenging to separate fact from fiction.

In this article, we’ll tackle some of the most widespread car myths and take a closer look at what’s actually true—and what you can safely ignore.

To better understand your vehicle and make more informed decisions, it’s crucial to know the difference.

Let’s debunk these myths once and for all!

Despite gas stations often displaying signs prohibiting phone use, there are no documented cases of cell phones causing explosions due to fuel vapors.

The risk is practically nonexistent, but it’s always a good idea to adhere to safety guidelines.

While older automatic transmissions might have felt less responsive and less efficient, modern versions have evolved significantly.

Today’s automatics often match—or even outperform—manuals in terms of performance, fuel efficiency, and comfort.

There’s no evidence that electric cars are more prone to fires than traditional combustion-engine vehicles.

In fact, studies show they may be safer in this regard, thanks to advanced safety systems.

Size and weight aren’t the only factors determining safety.

While small cars can sometimes be less safe, the difference between an average sedan and a large SUV is often minimal.

What truly matters is the vehicle's design, safety features, and specific model.

While classic cars have their charm and are often easier to repair, modern vehicles are far safer due to advanced technology and better materials.

They also meet stricter standards for fuel efficiency and environmental friendliness.

Unless your car’s manual specifies a need for higher-octane fuel, opting for premium is just a waste of money.

Modern engines are designed to perform optimally on regular gasoline unless stated otherwise.

Some believe driving with the tailgate of a pickup truck down reduces drag and saves fuel.

However, tests, including those by Popular Mechanics, show this isn’t true. In fact, it can increase fuel consumption.

A mesh tailgate might be a better option for improved aerodynamics.

This might have been true for older vehicles, but modern engines are far more fuel-efficient when restarted, particularly with start-stop systems.

If you’re stopped for more than a minute, turning off the engine saves fuel.

Many SUVs are marketed as off-road vehicles, but many models are built with only front-wheel drive and are designed primarily for city driving. Even four-wheel-drive SUVs are often more suited to gravel roads than extreme off-road conditions.

This is partially true. At high speeds, open windows increase drag and fuel consumption, but air conditioning always uses more fuel regardless of speed.

To maximize fuel efficiency, open windows are often the better choice at low speeds.

This is a misconception. It’s possible to replace a single tire, as long as it matches the others.

However, experts often recommend replacing tires in pairs—either both fronts or both rears—to maintain balance and grip.

While modern car technologies like traction control, lane assist, and automatic emergency braking can assist drivers, they are no substitute for skill and attentiveness.

Technology is a tool, not a replacement for good driving.

This old rule applied to older cars. Modern engines and advanced motor oils allow for longer intervals between oil changes.

Always refer to your car’s manual for the recommended maintenance schedule.

This myth is dangerous. Over time, motor oil accumulates particles and debris, which can harm your engine if not replaced.

Follow your car’s recommended maintenance plan to keep your engine healthy.

While it seems logical to stop and raise the roof in the rain, driving fast enough creates an airflow that can deflect rain away from the cabin.

However, ignoring the rain isn’t advisable—it can quickly lead to hazardous conditions.

Aside from a few specialized pursuit vehicles, most police cars are standard models in terms of speed and engine performance.

They are often optimized for durability and versatility, not top speed.

Hollywood loves depicting cars exploding after a bullet pierces the gas tank. In reality, a bullet would simply puncture the tank without causing any drama.

Tests, such as those on MythBusters, have proven this myth wrong.

This old advice doesn’t apply to modern cars. Today’s engines are designed to start efficiently, even in cold weather.

However, it’s a good idea to let the engine run for about 30 seconds to allow the oil to circulate properly.

Movies often show heroes hiding behind cars, but in reality, cars offer limited protection against bullets.

If it’s your only option, aim for the sturdiest parts, like the engine block or wheels.

Most cars lose value quickly and are rarely considered an investment.

Only a select few classic models appreciate over time, and that requires both luck and patience.