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Why Diesel Cars Are Among the Most Popular on the Market

Thinking of switching to diesel? Not sure where to start? This Carbar guide will walk you through the key differences between diesel and petrol engines so that you can choose with confidence.

Diesel powered cars accounted for 22.7 percent of registered cars in Australia in 2017, with 8.1 percent more registered from 2016, and that trend is likely to continue.

The simple reason why? It’s that a diesel engine is 20 to 35 percent more efficient than a similar petrol engine.

Diesel engines, long associated with trains, buses, and long-haul trucks, can be found in every type of car these days, from SUVs to compact city sedans to sleek sports cars.

This guide will offer some important information about the fuel efficiency of petrol vs. diesel, how diesel engines work, resale prospects on diesel cars, and introduce you to some great new diesel-powered cars to look for in 2018.

Let’s get started with the basics.


What’s it going to cost?

Diesel fuel is heavier than petrol. It contains 10 to 15 percent more energy than gasoline, meaning that a diesel car can go 20 to 35 percent farther on a single gallon.

That means lower overall filling costs. Diesel engines also produce 20 percent fewer C02 emissions than petrol engines, which can mean lower taxes.

However, diesel engines tend to present a pricier initial investment. For example, the 2017 Mazda CX-5 came in diesel and petrol options, with the diesel coming in at $3000 more. And you probably won’t make that back at the pump, unless you’re doing a lot of long-distance driving.


So why diesel?

The main advantage is power. Diesel engines can produce high torque at lower speeds, giving them excellent towing capability.

That diesel Mazda we mentioned before produces 169Nm more torque than the petrol at half the RPM, making it a much better choice for heavy hauling. If you’re towing a boat or a caravan, the choice is obvious.

Across the board, you’ll find that diesel engines produce more power at lower revolutions than petrol engines. So which should you choose?

It comes down to personal preference. If you’re planning to do a lot of long-distance cruising, diesel is great for maintaining pace and overtaking slower vehicles with minimal pedal adjustments.

Commuters will find that the high torque of diesel at low revolutions produces a smooth everyday drive. But if you’re more of a jackrabbit driver, you might prefer the thrill of petrol engines. There’s a reason why diesel-engine sports cars are still unusual to find.


How does a diesel engine work?

What exactly is a diesel engine and how is it different from petrol?

Essentially, the engines are quite similar. Both use fuel to generate energy. The process occurs through a series of small explosions, which move pistons up and down in order to turn the wheels of a car.

The main difference is how the explosions occur. With petrol, fuel is first mixed with air, compressed, and lit by a spark plug. And diesel?

Diesel engines have no spark plug. In a diesel engine, the air is first compressed and then the fuel is injected directly into the combustion chamber. Because the air is so hot from being packed together, the diesel fuel ignites on its own.


Some exciting diesel cars to check out


Mazda CX-3 Diesel

This turbocharged diesel is a great commuter choice, with excellent fuel economy, state-of-the-art technology, and top-notch safety features. Mazda is well known for its high-quality diesel.


Subaru Forester

The Forester offers flexibility with a spacious cabin, high-tech features, and all-wheel-drive technology. Available with a manual transmission, the Forester lets you drive your way.


Hyundai Santa Fe

A spacious all-wheel-drive family SUV, the Hyundai Santa Fe seats seven and produces astonishing torque with its 2.2-litre diesel engine. It combines luxury features with everyday practicality.

Keep checking Carbar for more great diesel cars that you can have delivered to your doorstep!

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