10 Dumb Car Myths That Refuse to Die

by AutoExpert   |  23 April, 2025

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Car culture is packed with weird superstitions and outdated advice that somehow keep circulating despite having zero basis in reality. When drivers were asked about the dumbest automotive myths they've encountered, the responses ranged from mildly silly to completely absurd. Here's a rundown of the automotive tall tales that refuse to die:

The 100 MPG Conspiracy

Nearly everyone's heard this one: some brilliant engineer created a carburetor delivering incredible fuel economy, only to be "silenced" by Big Oil and the auto industry. Somehow this mythical technology never surfaces, despite thousands of engineers who'd love to revolutionize transportation.

Car Myths

GMC's "Thicker Steel"

The persistent belief that GMC trucks use thicker, stronger steel than their Chevrolet counterparts. Same factory, same specs, different badges—but try telling that to die-hard GMC defenders.

Car Myths

Barefoot Driving Ban

"It's illegal to drive barefoot!" No, it's not—never has been in any U.S. state. This myth is so widespread that police departments regularly have to issue clarifications.

Car Myths

Cold Engine Myths

Two stubborn myths refuse to die: "You must warm up your car before driving" and "Don't reverse when the engine is cold." Modern engines actually warm up faster while driving gently, and they're perfectly capable of moving backward at startup without self-destructing.

Car Myths

The Electric Car Falsehoods

Anti-EV myths abound: "They're less green because of power plants" and "Battery manufacturing makes them worse for the environment." Both claims have been thoroughly debunked. Even with coal-generated electricity, EVs produce fewer lifetime emissions than gas vehicles.

Car Myths

The +2 Insurance Discount

Sports car owners love claiming those tiny back seats in 2+2 coupes exist to lower insurance rates. Insurance companies aren't fooled—those seats exist so buyers can tell their spouses, "See? It's practically a family car!"

Car Myths

Manual Transmission Safety

The belief that stick shifts prevent distracted driving. Anyone who's driven a manual regularly knows shifting becomes automatic muscle memory, leaving plenty of attention for smartphone distractions, coffee drinking, or other dangerous behaviors.

Car Myths

Trade-In Tactics

"Don't mention your trade-in until after negotiating the new car price." According to actual car salespeople, this "clever" strategy just wastes everyone's time without improving the deal.

Car Myths

No Seatbelt "Safety"

Less common now but still lurking: the idea that not wearing a seatbelt is safer because you could be "trapped" after a crash. Physics and decades of crash statistics strongly disagree.

Car Myths

Brand Loyalty at the Pump

The fear that switching between gas brands will somehow damage an engine. While there were minor differences between gas formulations decades ago, modern standardized fuel makes this concern completely outdated.

Car Myths

Car myths seem to persist through generations despite ready access to accurate information. Perhaps there's something comforting about automotive superstitions, or maybe drivers just like having secret "knowledge" to share. Either way, these myths continue their stubborn existence in garages and online forums everywhere.

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