2018 Mazda 3 vs 2020

What's the difference?

The 3 is a terrific car and continues to improve with every yearly update, however minor. The uplift in the Neo Sport may not look like $1000 worth, but having that proper screen and reversing camera - along with standard AEB - starts to make sense over time.

In 2017, I said the pick of the range was the Maxx and I still reckon the Maxx Sport is the one to go for - it has a good package of safety equipment and a sensible spec list, without the frippery of the increasingly oddly priced Touring. The not-that-much-more SP25 is similarly specified, but only worth it if you want the extra power. Not everyone does.

The new i30 and forthcoming new Corolla are giving the Mazda3 more of a hurry-up these days, especially in price and spec but the i30 now has the driving dynamics to go with it. And with the Kia Cerato rapidly closing in, every little bit of competition is making the 3 a better car than before.

And it's still by far the best-looking car in the segment. For many, that's what will tip them over the edge.

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 3's exterior design is still a winner to my eyes. Based on Mazda's Kodo design language, it looks great in just about any colour and the company's commitment to beautiful paint some years ago is still paying dividends.

It's a lovely, flowing design that looks best in the sedan and few cars in the segment are as genuinely pretty. About the closest you'll get for commitment to design is the Alfa Giulietta.

As you climb the range, the detailing in items like the lights and brightwork mark out the spec level, with additions like chrome exhaust tips and LED daytime running lights.

The range is available in seven colours - 'Sonic Silver', 'Jet Black', 'Deep Crystal Blue', 'Titanium Flash' (a sort of bronzey brown), 'Snowflake White' and 'Eternal Blue'. Mazda continues to be absurdly generous and offer those colours as no-cost options. 'Machine Grey' and 'Soul Red Crystal' (this one is a ripper) are a still-reasonable $300.

Unlike previous versions, there's no yellow or purple paint available.

Inside is well-executed but is a bit grey and drab, especially in the lower-spec versions. I recently drove a Touring with contrasting colour panels in the doors, but it was a deep rich red that barely stood out from the grey. 

Some touches, such as satin silver dash parts, do lift the colour a little but it's fairly nondescript. Mazda also persists with the frustrating single-dial-with-wings dashboard that I really don't like very much. Still, few others complain, so it's probably just me.

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 3 comes in two body styles - four-door sedan and five-door hatchback. The most popular is the shorter hatch, despite the loss of luggage capacity. The different boot space dimensions deliver 308 litres in the hatch while the sedan has 408 litres. For load capacity, the sedan is the clear winner.

The hatch's boot size isn't exactly a world-beater but it does feature a cargo cover to hide your valuables.

The interior dimensions are unchanged, meaning good if not outstanding rear leg room. The cabins are basically the same, so if you refer to our interior images, you'll note only minor differences.

The cup-holder count differs depending on which specification you choose. The Neo Sport has just two, for the front passengers. In the rest of the range there are two up front and two in the rear, with bottle holders in each door as backups. Some models feature extra storage space for books or devices but there's no sunglass holder until you reach the Touring.

The turning circle is a fairly standard 10.6 metres, so most suburban streets need a three-point-turn manoeuvre. Park assist is limited to beepers and the reversing camera.

Ground clearance when unladen is 160mm, so all but the steepest driveways won't present a challenge, but going off road is not on the menu. Kerb weights range from 1258kg for a Mazda3 manual Neo to 1336kg for an auto Astina.

Gross vehicle weight ranges from 1800kg to 1875kg.

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 future isn’t cheap, and the new Mazda3 wasn’t a cheap car to begin with.

The new SkyActiv-X engine will be sold in just one trim level, the top-spec Astina, and will carry a $3000 premium over an identical car with the old naturally aspirated 2.5-litre ‘G25’ powertrain.

It makes for an MSRP of $41,590 in automatic form, as tested here. Mazda’s new premium push has compounded with the extra cost of the new engine to put the price dangerously close to premium car levels. A new BMW 1 Series, for example, can be had for $45,990.

It has to be said at this Astina grade, Mazda packs in the equipment. Standard fitment includes 18-inch 'gunmetal' alloy wheels, an 8.8-inch multimedia display (not a touchscreen) with Apple CarPlay and Android Auto support, built-in nav, digital radio, and Bluetooth connectivity, a slick Bose audio system, leather interior trim, full LED front lighting, heated auto-folding wing mirrors, push-start ignition, keyless entry, a sunroof, and a 360-degree top-down reversing camera.

There are some above and beyond additions, too, like a holographic head-up display, semi-digital dash, and a truly thorough safety suite. Alarmingly though, despite the electrical system overhaul, this Mazda is still missing advanced connectivity like USB-C and wireless charging. Seems like a petty complaint, but still one I’m going to make in the context of an over $40K hatchback.

The SkyActiv-X grade has a mild-hybrid system backed by a lithium ion battery which helps to power on-board auxiliary systems and "assist the engine." Unlike hybrid tech from Hyundai or Toyota, however, this system does not directly drive the wheels.

This is the clincher, really. The problem this car will face is being unable to take buyers away from hybrid Toyotas which are far more competitively priced, boasting even better fuel consumption.

There are two engine specs in the 3 range. Both are equipped with Mazda's 'i-Stop' stop-start technology but goes without the 6's 'i-Eloop' regenerative braking battery charging tech. Every model comes with a choice of gearbox, either a six-speed manual or six-speed automatic. The automatic is a traditional auto rather than the dual-clutch you might find in a Golf.

Both engines run on standard unleaded, use a standard oil type. Oil capacity is model dependent, and can be found in the owners manual. An oft-asked question is whether the 'SkyActiv' engine uses a timing belt or chain - we can report the engines are both chain-driven.

The Neo Sport, Maxx Sport and Touring all come with the 2.0-litre SkyActiv with 114kW and 200Nm of torque.

The SP25, SP25 GT and SP25 Astina are, as the name suggests, equipped with the larger 2.5-litre motor which churns out 138kW (almost exactly 200 brake horsepower in the old money) and 250Nm.

Towing capacity is rated at 1200kg braked and 600kg unbraked regardless of engine size.

The diesel vs petrol argument has long since been settled with the demise of the punchy but not particularly popular XD. So you won't have to worry about a diesel particulate filter replacement any more. There is no LPG or turbo sport edition, like the unruly old MPS3 performance car.

Performance figures vary between the two engines - the SP25 auto should complete the 0-100km/h acceleration test in just under eight seconds, with the 2.0-litre cracking it in around nine seconds. The manuals will likely be a tenth or so slower.

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.

Fuel-consumption figures vary slightly between the models. While the 3 has never been a fuel-economy star, as years have gone by its mileage has improved.

Official figures suggest that the 2.0-litre burns petrol at 5.8L/100km for the auto and 5.9L/100km for the manual, while the 2.5-litre consumes 6.1L/100km for the auto and 6.5L/100km for the manual.

Our own statistics suggest these ratings are a little on the optimistic side, which is no great surprise. We regularly get about 8.0L/100km in the 2.0-litre (a neat 12.5km/l) and around 11L/100km for the 2.5 (around 9km/l).

Fuel-tank capacity is 51 litres, regardless of engine size, and there's no need for premium fuel.

As I've already said, Mazda doesn't offer an oil-burner anymore as diesel fuel economy just isn't the drawcard it used to be.

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.

These days the 3 jostles at the head of the pack for driving dynamics. The MY17 model scored Mazda's new 'G-Vectoring' technology, which subtly sharpened the steering. This, along with tweaks to the front and rear suspension, has delivered a driving experience that is hard to fault. While it would be nice to have a bit more performance (the SP25 is still no fireball), it's fun to drive if you have a bendy road ahead of you.

Most of the time, though, you're in the urban grind and it is here that the 3 excels. The steering is light, accurate and  cleverly geared. The auto is a good one and even in town the light clutch of the manual makes progress easy and unfussed. Forget about the Eco mode, though - it's doughy and slow.

Over the years, Mazdas in general, but in particular the 3, have suffered from poor insulation, resulting in road noise invading the passenger space. 

Past reviews of mine, and many others, will rail against the cabin noise. Things have gotten better and continue to do so. Where in the past occupants would suffer from tyre rumble and a cacophony of suspension noise, particularly from the front, that's no longer the case. 

The noisy suspension issues have been sorted in various ways across the whole Mazda fleet and the 3 is now a much quieter, if not class-leading, proposition. But it does come close.

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.

The same excellent suite of active safety items available on other Mazda3 Astina variants is offered here, meaning freeway-speed auto emergency braking (AEB), reverse AEB, lane keep assist with lane departure warning, blind spot monitoring, rear AND front cross traffic alert (uses sensors to see around objects which might block your view when pulling out), traffic sign recognition, as well as adaptive cruise control with stop and go function.

On the expected side of things there are seven airbags, the expected brake, stability, and traction controls, as well as dual ISOFIX and three top-tether child seat mounting points across the rear seat.

Unsurprisingly, the Mazda3 carries a maximum five-star ANCAP safety rating as of 2019.

Mazda offers a three-year/unlimited kilometre warranty, with roadside assist subject to an additional yearly charge. So if you're worried about a flat battery or running out of fuel, the extra $90-$100 per year is a good investment. You can also purchase an extended warranty from your dealer.

Those worried about service costs will be pleased to know Mazda offers capped-price servicing. Your dealer expects to see you every 10,000km or 12 months, whichever comes first, and the prices are listed on the Mazda website, varying slightly between between engine types (by about $30 per service).

The 3 enjoys good resale value, with a check of our price guide suggesting a 2014 Neo will fetch between 65 and 75 per cent on a private sale, suggesting you'll have few issues when you need to shift a second-hand machine.

From what I've seen of older 3s, durability seems pretty good, even when in the hands of people who aren't all that careful with their cars. The 3 seems to suffer from few reliability issues. A quick swing through the usual internet forums uncovered no obvious common faults or defects. A search for automatic transmission problems, injector or transmission failure or other common problems yielded few genuine results. If you keep up with the maintenance, things seem fairly trouble-free for the current 3.

Diesel-engine problems are clearly a thing of the past, with no diesel offered.

Where is the Mazda3 built? An excellent question - all 3s come from Mazda's Japanese factories.

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.