2020 Mazda 3 vs 2019

What's the difference?

The SkyActiv-X pushes the Mazda3 to new heights of refinement and reinforces the fact it’s still one of the best cars behind the wheel amongst its peers.

Mazda has made it subtle to a fault, so people will just have to believe you when you tell them this expensive little car pushes the bounds of how a non-turbo 2.0-litre engine can feel.

It’s great to see this new tech really does what it says it will do though, so we’re keen to see where Mazda can take it from here.

The new 3 sedan is just as good as the hatch, but different. Mazda has gone out of its way to make the two body styles look different enough to cover more than a few bases. This works on a global scale - the Chinese market absolutely loves a sedan but in Australia, the 3 sedan only accounts for around 10 percent of sales.

The new 3 really is something else - it looks feels a heck of a lot more expensive than it is (especially in Soul Red), drives beautifully without being startling and in the case of the sedan, rides very comfortably indeed.

There’s nothing interesting about the SkyActiv X’s design at all. In fact, from the outside, the only way you’d be able to tell this car apart from a regular Astina is the SkyActiv X badge on the back. There are no funky eco-look wheels, coloured pinstripes, or sticker-work as some other brands choose to go with.

I hope you weren’t trying to impress your neighbors with your damn-fangled engine tech then, because they’ll be none the wiser. Then again, they probably wouldn’t be able to tell a Hybrid Corolla apart from a regular one, so maybe subtlety is key here.

Inside is the same deal. There are no badges, alternate trims, or coloured highlights to let you know you’re in something a bit different.

The most significant change on the inside is buried two menus deep in the multimedia system. It’s a new energy monitoring screen to add to the fuel monitoring suite which shows you how power is being used in the car, and importantly, whether or not the engine is using the special combustion technology. There are some conditions on it which we’ll explain later.

So, it’s not special to look at, but does it need to be? Most people would say no. We all know the Mazda3 is a great looking car (arguably one of the best in this segment) whether you choose the sedan or hatch, so at least you won’t have to make a drastic style choice either way.

The sedan is oddly anonymous in this new Mazda3. It misses out on some of the cool detailing of the hatch, particularly the gloriously designed tail-lights - the circular sections are flatter and flush with the rest of the housing.

It's not ugly, not by a long shot and certainly isn't as polarising as the hatch. You can also see out over your shoulder. 

The front ends of the hatch and sedan are fundamentally identical, with the funky grille shape and effects along for the ride.

From the side, both have good presence but the hatch's - I hesitate to use this word - stance is much more convincing. The good news is, the choice between them is more than a boot.

Inside is visually identical to the hatch. The new dash is refreshingly button free (although still a bit colourless) and the new screen looks terrific.

There's something about the consistency of detailing in the current Mazda range - all the fonts match on the switches, the instruments and the head-up.

It sounds ridiculous but that makes a huge difference in making the cabin feel resolved. The seats are terrifically comfortable, too.

Again, no major changes to report here. The Mazda3 remains the same as before inside and out when it comes to dimensions. This means healthy space for front occupants, complete with lovely soft leather-clad trims on the doorcards and centre console for your elbows.

There are two smallish cupholders somewhat clumsily placed in front of the shift lever, a small binnacle in front of that, a large centre console box, and useful bins in the doors.

The pared back design makes for ergonomic button controls. Mazda’s dial-controlled media system takes a bit of getting used to, especially when using CarPlay or Android Auto, but some prefer it. Rear visibility is less compromised in the sedan as tested compared to the closed-in space which features on the hatch.

Back seat occupants get average legroom for the class, although they will benefit from the same relatively lavish soft leather-trimmed surfaces.

Boot space continues to be an issue for the hatchback with 295L, while opting for the sedan as tested here will well and truly solve the issue as it offers 444L.

The sedan rides on the same wheelbase as the hatch but the overall length is up 200mm. That might not seem like much, but that translates to a boot of 444 litres, which is a lot more than the hatch's 295 litres.

The rear seats seem slightly more roomy than the hatch. There are even air vents for rear seat dwellers, which is rather nice.

The G25 Evolve starts at $29,490 (before on-road costs) for the manual almost nobody buys, and an extra thousand takes you to $30,490 for the six-speed auto.

The Evolve spec isn't skimpy, with 18-inch alloys, dual-zone climate control, an excellent safety package, reversing camera, rear parking sensors, keyless entry and start, auto LED headlights, auto wipers, electric drivers seat, sat nav, leather wheel and shifter, leather seats and a space-saver spare.

Mazda's 'MZD Connect' has a had a big facelift to go with the very nice interior. Displayed on an 8.8-inch screen that looks like it belongs, it has DAB+, Apple CarPlay, Android Auto and in-built sat nav. The eight-speaker stereo is quite nice if nothing amazing.

Here’s where it gets interesting. The SkyActiv-X X20 drivetrain is a 2.0-litre four-cylinder non-turbo petrol engine.

The trick? It blends the principles of spark plug ignition with that of diesel combustion ignition. Now to be clear, sparkless ignition would be the holy grail here, and that’s not quite what this engine does.

Mazda calls the tech spark-controlled compression ignition. It works by blending a lean mix of predominantly oxygen on the intake stroke in with a second injection of much richer fuel when the cylinder reaches close to its maximum compression. The spark plug then fires, and Mazda says this fuel mixture will then more fully combust thanks to the extra compression present.

According to Mazda at least, this means less wastage, more power, and cleaner emissions which are free of unburnt or partially burnt fuel.

Previous information had this engine feature a supercharger, and the brand's representatives confirm that some form of supercharging is present, however it is mainly "used as an air pump" for "ensuring an adequate supply of air is created" so that this new combustion cycle can take place.

Power has been boosted to 132kW/224Nm from the normal 2.0-litre’s 114kW/200Nm. Importantly, the peak torque figure arrives 1000rpm lower at just 2000rpm, getting close to the responsiveness of a turbo unit.

The SkyActiv-X is front-wheel drive only via an updated version of the brand’s six-speed torque converter automatic which is promised to be even more refined than its predecessor.

The new engine is also paired with a 24-volt mild-hybrid system which does not drive the wheels directly but assists the engine and auxiliary systems in the car.

Mazda's 'SkyActiv' 2.5-litre engine lives on with a few more kilowatts into the bargain, in this case delivering 139kW/252Nm to the front wheels via a six-speed automatic.

The G20 makes do with 114kW/200Nm and feels a lot slower.

As ever, the SkyActiv engine drives the front wheels through a six-speed SkyActiv transmission. 

All this new technology claims to cut 1.1-litres per 100km from the combined cycle fuel figure of an equivalent 2.5-litre Mazda3, down to a total of 5.5L/100km for the automatic (as tested).

Real world figures tell an interesting story. While my recent test of the 2.5-litre car produced a blow-out of 8.4L/100km, three days of driving the SkyActiv-X around in mixed conditions had it produce a much lower figure of 6.4L/100km.

So not only was the new engine more responsive, it was much closer to its claimed number on fuel, too. Emissions (often the real reason for advances in engine tech these days… ) have also dropped markedly from 152g/km of CO2 to 135g/km.

Interestingly, the SkyActiv-X engine requires 95 RON mid-grade unleaded petrol in Australia, contrary to previous information which suggested not only would the technology run on base 91, but it would actually run better.

Mazda says the 95 requirement is due to the high sulfur content of our entry-level fuel (a comment frustratingly echoed by other manufacturers), and it’s more a durability issue than one of octane. The brand’s representatives assured us 95 RON does not significantly affect the combustion ignition process.

As with all Mazda3s the SkyActiv-X has a 51 litre fuel tank.

Despite all the extra hardware south of the rear axle, Mazda reckons you'll sip standard unleaded (there's a bonus) at a rate of 6.5L/100km on the combined cycle, 0.1L/100km less than the hatch.

Our week with the car saw us average 9.8L/100km with mostly suburban driving.

As before, Mazda's has fitted 'i-Stop' stop-start which is quite clever. Most people hate stop-start, but this one covers both bases.

You can control whether it switches off the engine. Light brake pressure keeps the engine ticking over while a slight increase will cut the fuel.

I wasn’t sure what to expect. How does a different injection method feel?

After three days behind the wheel I can confidently say most people won’t really be able to tell the difference, but that’s not to say there isn’t one.

Quite the opposite in fact. This new engine’s bump in power and more readily available peak torque are notable.

I spent most of my drive time with the energy monitor screen set, so I could try to understand how this new engine reacted to my inputs. The combustion ignition (SPCCI) mode is working most of the time. It doesn’t run at idle, and Mazda says it won’t run at ‘high loads’, but it seems to always be on past about 1200rpm in normal driving.

Once it reaches that point, the revs surge up quickly, almost like a turbocharged engine. It’s not quite as full-on with its surge of power, but it is very noticeable.

It gives this car a kind of comfortable pulling power kick which is at least on-par, but probably better, than the equivalent 2.5-litre engine (without being able to test them side-by-side), despite its higher power figures.

I wish I could tell you there was some big ‘wow factor’ moment here. Like it sounds really great once it’s on song, or it has a snapping-on feeling like Honda’s once-lauded VTEC. But it doesn’t. This engine has a unique tone, sure, but it’s quiet and subtle, and the delivery of power is quite linear.

In fact, the whole drive is notably smooth and refined. A cut above the rest of the Mazda3 range. The engine sounds distant, even when pushed, and the transmission has been smoothed out further between gears and re-calibrated to better deal with the new powerplant’s readily available bump in power.

As always, Mazda’s 'i-Stop' stop/start technology is one of the best on the market, to the point where you won’t even notice it’s there. The efficiency of this system has apparently been given a boost by the new 24V hybrid system, but again, there’s little tangible difference in terms of how it feels.

The energy monitor really made me wish this car was just a traditional hybrid. I don’t doubt whatever comes next will be. it would be a truly fantastic step forward to blend the benefits of this engine with a true hybrid drive for even lower consumption.

The drive experience imparts a sense the SkyActiv-X simply does what it claims to do. It’s a shame there’s nothing particularly exciting for driving enthusiasts (apart from how cool the tech is), but it really lives Mazda’s current ethos of constantly tweaking and improving what it has to work with, without any radical changes to what consumers expect behind the wheel.

Mazda tells that the set-up of the sedan is identical to the hatch. Sure there are differences like, say the tyres, but the idea is that the two drive identically. I, uh, I don't think so.

Plenty is the same. The engine and transmission do a good, less frantic job of moving the 3 along than the lower-powered 2.0-litre.

I can't stress enough how much better the 2.5 is. The 2.0 does a good enough job, it's just that you'll find it wanting with a load on about halfway up that steep hill. The 2.5 is much happier in traffic and the difference in fuel consumption is negligible, so the only real extra cost is the up-front spend for the G25.

The steering is just as keen and quick as the hatch's, too. The wheel responds very quickly to inputs and you don't have to do much twirling to get the car into a park.

It's not too quick a sneeze will send you into orbit, though, which is handy. The clever 'G-Vectoring' system is along, too, rapidly building driver confidence in the car's abilities.

What felt a lot different to me was the ride, something I noticed moments after picking up the sedan. I had a hatch overlapping with the sedan so was able to jump in and out over a couple of days to ensure I wasn't making it all up.

It seemed a little less busy than the hatch which felt a bit more loaded for bear. The sedan felt like it had a little more roll and carried a little more weight. There's absolutely nothing wrong with that, a scaled-down 6 isn't a bad idea at all.

In town and at speed, the 3's past problems with road noise are a distant memory. No doubt strategic use of foam, carpets and other clever bits and pieces are a big part of the improvement, as well as stiffer bits and pieces.

The sedan is a bit easier to get around in as the vision over your shoulder is a bit better, unencumbered as it is by that slab of metal that is the hatch's C-pillar. 

Mazda's (very welcome) preoccupation with safety continues. The new 3 has seven airbags, ABS, stability and traction controls, forward and reverse AEB, lane keep assist, reverse cross traffic alert, forward collision warning and a blind spot monitor.

Out back are three top-tether anchors and two ISOFIX points.

The new 3 scored a maximum five-star ANCAP safety rating in May 2019.

All Mazda3s, including this new variant, carry a five-year, unlimited kilometre warranty promise competitive with competitor marques, including five years of roadside assist.

Service pricing was not available at the time of launch, although Mazda told us it shouldn’t stray far from the current 2.5-litre engine option which costs between $315 and $359 on alternating years for the life of the warranty.

Service intervals should also remain the same at 10,000km or 12 months whichever occurs first.

Mazda offers a five year/unlimited kilometre warranty which, like the clutch of advanced safety gear, is very welcome indeed.

Since the start of April 2019, you also get five years of roadside assist. In the past, you had to pay for that.

The company continues with the weird 12 months/10,000km service intervals, so clearly it doesn't seem to bother its customers too much.

The 'Service Select' program lists the price of each service up to the fifth. Total cost over five services is $1581 at an average of $316 per service (you'll pay either $299 or $342, plus extra items listed on the website).