2019 Mazda 3 vs 2020

What's the difference?

If you will indulge me, I'd like you to cast your mind back to the mid-90s. If you're too young, ask your parents or Google to do the same.

Have a peek at the pretty but not especially amazing 323 Astina. Some folks call it a four-door coupe, but it's a sedan. It was not nearly as attractive as the more adventurous hatchback.

The 323 went dull for almost a decade and then when the 3 arrived, it was the sedan that I thought was the looker. Sure, they weren't completely different like the old days, but the proportions were nicer and it was just a better thing to look at.

Then along came the most recent fourth-generation 3, the BP. The hatch, I think, is the gorgeous one while the sedan is a more sober. And while still made of lovely proportions, it seems to have been... flattened a bit.

Thorough as we are here at CarsGuide, I spent a week with the new sedan to ponder not only its looks, but whether it's much different to the hatch.

You get exposed to a lot of cutting-edge technology doing this job.

We get to drive new drivetrain technology all the time as manufacturers are racing to get their emissions down – usually it has to do with electrification or hybridization.

What’s especially rare about the new tech sitting under the bonnet of this unassuming Mazda3 is its sole purpose seems to be extending the life of the combustion engine beyond its previously imagined use-by date.

It does so by blending some of the principles of diesel combustion technology with the latest in computer-controlled fuel-injection methods.

It’s a distinctly different approach to the future from the Japanese brand, so what’s ‘SkyActiv-X’ all about? Will you notice a difference? Does it drive well? And, what else is in the box?

We tested a Mazda3 SkyActiv-X for several days at its Australian launch to answer these questions, and more.