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Top 5 Fuel Economy Myths Costing Drivers Money ( Mechanic Explains )

Top 5 Fuel Economy Myths Costing Drivers Money ( Mechanic Explains )

Car Connection Workshop Jan 21, 2026 48 min
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About this episode

Fuel economy myths can cost drivers significantly, and this episode dives into the top five misconceptions that lead to wasted money at the pump. Host Niall Monermouth Jenkins shares insights from his extensive experience, emphasizing the importance of driving habits and vehicle maintenance. Listeners will learn how factors like stop-and-start driving, city versus highway travel, and fuel choices impact overall efficiency. With a blend of humor and practical advice, Jenkins aims to help drivers reclaim their fuel budget and make informed decisions.

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Technical Too Afraid to Ask
Car

Jeep Wrangler

"Whether it's a 25-year-old Jeep Wrangler getting a second chance at life, or a Nissan Road getting its brakes back in order, or a mystery leak that's got everyone scratching their heads."

The Jeep Wrangler is a tough vehicle that can handle rough terrain and is often used for off-roading. Many people love it for its ability to go on adventures and customize it to their liking.

Car

Nissan Rogue

"...or a Nissan Rogue getting its brakes back in order, or a mystery leak that's got everyone scratching their heads."

The Nissan Rogue is a small SUV that is great for families and everyday use. It has a lot of space for passengers and cargo, making it a popular choice for many drivers.

Term

diesel endorsement

"...to in order to be able to write my diesel endorsement for diesels, big rigors, you know, 18 wheelers."

A diesel endorsement is a special license that lets drivers operate vehicles that run on diesel fuel, like big trucks. To get this, drivers usually have to take a test.

Term

18 wheelers

"...for diesels, big rigors, you know, 18 wheelers."

'18 wheelers' are big trucks that have 18 wheels in total. They are used to carry heavy loads across long distances and are often seen on highways.

Car

Toyota FJ Cruiser

"...even though I was in the 07 FJ Cruiser, I felt like an aunt a lot of the times."

The Toyota FJ Cruiser is a tough SUV designed for off-road driving. It has a unique look and is built to handle rough terrains, making it popular among adventure seekers.

Term

four-wheel drive

"...did that whole trip in an 07 four-wheel drive. Yes, it's four-wheel drive, not two-wheel drive."

Four-wheel drive means that power goes to all four wheels of the vehicle, which helps it grip the road better, especially in tough conditions like snow or mud. It’s different from two-wheel drive, where only the front or back wheels get power.

Term

parts departments

"...Why do they have parts departments?"

Parts departments are parts of car dealerships where you can buy replacement parts for your vehicle. They help you get the pieces you need if something breaks or needs to be replaced.

Term

factory warranty

"...Why do they give you factory warranty and have parts departments? Because they know it breaks down."

A factory warranty is a promise from the car maker that they'll fix certain problems for free if they happen within a specific time or distance. It helps protect you from unexpected repair costs right after buying the car.

Term

warranty coverage

"...But after the warranty's over, who's paying? And what items aren't covered by warranty?"

Warranty coverage means the things that the car maker promises to fix for free if they break. It's important to know what is included because some common parts like tires and brakes might not be covered.

Term

fluids

"...just a few. Tires, brakes, exhaust, fluids, belts, hoses,"

Fluids are the liquids that help your car run smoothly, like oil and coolant. Keeping these topped up and in good condition is important for your car's health.

Term

belts

"...just a few. Tires, brakes, exhaust, fluids, belts, hoses,"

Belts are parts in your car that help move things like the engine and air conditioning. They need to be checked and replaced sometimes to keep everything working well.

Term

hoses

"...just a few. Tires, brakes, exhaust, fluids, belts, hoses,"

Hoses are tubes in your car that carry liquids like coolant and oil. They can get old and break, so it's important to check them regularly.

Part

ball joints

"...Tyrant ends, ball joints, lower control arms, pushings, not covered. Unless you have a bumper to bumper coverage..."

Ball joints are parts of the car's suspension that help the wheels move up and down while allowing the car to steer. They are important for keeping the ride smooth and the car stable.

Part

lower control arms

"...Tyrant ends, ball joints, lower control arms, pushings, not covered. Unless you have a bumper to bumper coverage..."

Lower control arms are parts of the car's suspension that help connect the wheels to the body of the car. They help the wheels move properly and keep the car stable while driving.

Term

bumper to bumper coverage

"...Unless you have a bumper to bumper coverage, that stuff's not covered. And here, I'll give you another big clue this morning..."

Bumper to bumper coverage is a type of car warranty that protects almost everything in the car, except for things that wear out over time. It helps cover repairs if something goes wrong with the car.

Term

turbo engine

"...why modern engines don't last like they used to, turbo engines. You got a turbo engine? You're gonna want to listen up for that one, friends, because turbos are nice."

A turbo engine is one that has a special device called a turbocharger. This device helps the engine produce more power without making it bigger, which can save fuel and improve performance. However, it needs to be taken care of to work well.

Term

RPM gauge

"I look at my RPM gauge and it'll tell me basically exactly where I am on the speed."

An RPM gauge shows how fast the engine is spinning. It helps you know when to change gears to keep the car running smoothly.

Term

tachometer

"I drove it by tachometer."

A tachometer is a tool that tells you how fast the engine is turning. It helps drivers know when to change gears for better performance.

Term

fuel efficiency

"...I made it all the way to London from Fort Erie and back on $80 worth of fuel."

Fuel efficiency is how far a car can go on a certain amount of gas. Better fuel efficiency means you spend less money on fuel for the same distance.

Term

tire blowout

"That tire blows, you're a goner. That tire will blow you completely sideways."

A tire blowout is when a tire suddenly bursts, causing the car to lose control. It can happen for several reasons, like if the tire is too old or damaged.

Term

highway speeds

"It'll roll your car over instantly while you're going highway speeds. What do you think that's gonna look like?"

Highway speeds are the fast speeds you drive on highways, usually between 55 and 75 miles per hour. It's important to be careful at these speeds because it can be harder to control the car if something goes wrong.

Term

fuel economy

"no fuel economy at all, it's gone. That means you're sucking fuel like a shop vac."

Fuel economy tells you how far your car can go on a certain amount of gas. If it's low, your car uses a lot of fuel for the distance it travels.

Term

operating temperature

"the thermostat and the cooling system's working so hard to maintain 195 degrees Fahrenheit so the engine is running at normal operating temperature."

Operating temperature is the best temperature for your car's engine to work well. Most engines run best around 195 degrees Fahrenheit.

Term

regular gas

"...Number five, regular gas versus premium. Now here, we talked about this a little bit..."

Regular gas is the standard type of gasoline that most cars use. It's usually cheaper but may not be the best choice for high-performance cars.

Term

BTUs

"...the deal is butane, not butane, sorry, BTUs, British thermal units. That's how you measure the kaboom in the engine."

BTUs are a way to measure how much energy fuel can produce when burned. It's important for understanding how powerful different fuels can be for engines.

Term

octane level

"...because the octane level's higher. It's as simple as that."

The octane level of fuel tells you how well it can handle pressure in the engine without causing problems. Higher numbers mean better performance for some engines.

Term

premium fuel

"...you're gonna get a bigger boom on premium fuel than your regular fuel because the octane level's higher."

Premium fuel is a type of gasoline that has a higher octane rating. It's better for some cars that need more power and performance.

Car

Honda Civic DX

"Our 99 Honda Civic DX two-door hatchback,"

The Honda Civic DX is a type of car made by Honda. The 1999 model is known for being reliable and good on gas, making it a popular choice for many drivers.

Car

Hyundai Accent

"run premium in the 09 Hyundai Accent."

The Hyundai Accent is a small, budget-friendly car that is easy to drive and economical on fuel. The 2009 version is one of the earlier models.

Term

CVT transmission

"First one is with the, what do they call it, CVT? Yeah, transmission. You gotta know and understand that puppy because it'll bite you big time."

A CVT is a special kind of car transmission that helps the engine run more smoothly and efficiently. It can change gears without the usual steps, which can make driving feel smoother.

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