Mazda CX-30 vs MG MG3

What's the difference?

About to enter its fifth year in market the Mazda CX-30 is holding up well and this GT SP FWD grade delivers solid value relative to its key competitors, of which there are many. It’s also space-efficient, practical and performs well with top-shelf safety, decent refinement and good dynamic ability.

Alternately, it’s crying out for a hybrid powertrain to improve fuel efficiency, the interior form and function is starting to date and while it meets the market the ownership promise could be sharper. But this little SUV is still worthy of a spot on your new-car short list.

The MG3 still makes a strong argument for a low-cost, low-fuss option just like the models it now beats on price (Yaris, Mazda2, etc) used to.

While it also falls short in some areas like dynamics when pushed, the improvements to interior tech and comfort mean the MG3 should be considered if you're looking for a city runabout.

However, with the MG3’s price jump, rivals from Japanese and Korean brands are closer in cost than they were for the sub-$20K first-gen MG3, and their ability to handle Australia’s conditions outside the city mean they’ll prove a more useful long-term companion for many.

The MG3 nails its brief as a convincing option for first-car buyers or as a second runabout when there’s another option for long trips. It has taken a big step up from the ‘budget-friendly’ vibe of the original.

Mazda continues to follow a disciplined design path with everything from the MX-5 sports car to the BT-50 dual-cab ute sharing key attributes like the brand’s signature trapezoidal grille, simple flowing lines and sleek head- and tail-lights, all wrapped up with a subtle hint of chrome here and there.

Car-spotters with the GT SP on their checklist should look out for 18-inch black metallic rims as well as black exterior trim, including the mirror caps. 

Inside, the CX-30 maintains Mazda’s restrained approach with smooth surfaces integrated across the multi-layer dash and primo leather-trimmed seats.

That said, this car is starting to show its age with the multimedia screen plonked on the top of the dash (in typical Mazda fashion) and a largely conventional instrument cluster.

Yes, the main dial is configurable courtesy of a central 7.0-inch TFT screen, but next to more recent arrivals boasting sleek, often twinned, flat screen displays the CX-30 looks and feels out of touch. 

Functionally, there’s a sensible mix of digital controls and physical buttons (points for audio volume and ventilation dials!), but… the multimedia screen can only be accessed by a rotary controller in the centre console once the car is mobile (it works as a touchscreen when you’re stationary).

Some say touchscreens take your eyes off the road so the controller makes sense, but with a sequential app like Spotify it can take a lot of twirls to get to where you want to go, which upsets concentration and takes your eyes off the road, anyway. I’d prefer the relative ease of a quick press on a screen.

Aside from all that, the materials used are high quality with soft-touch surfaces across key contact points and hard plastics confined to high-wear areas. 

Following the new design language pioneered here by the MG5 sedan and MG4 electric hatch, the MG3 looks like it’s trying for a sportier vibe than its predecessor, and maybe even a hint of European flair.

A grinning front grille and pointed set of headlights are followed around the side by a couple of body creases that give the hatchback a sweeping look, an attempt perhaps to seem longer than it is.

It doesn’t look like any of its rivals, unlike the MG5 which is easily mistaken for a small Mercedes CLA at glance.

Here on our Dover White test car, some angles are unflattering (it's giving 'hire car'), though the model’s available Diamond Red or Brighton Blue are fairly distinctive. Yes, some of the colours reference the brand’s UK heritage, despite being built in China.

Inside, the cabin benefits from a fairly tidy layout, with some genuinely thoughtful attempts at making the otherwise budget-focused model feel a little nice. A cross-hatch design through the dash mirrors, the seat stitching and the steering wheel and its buttons are nicely angular.

At just under 4.4m long, close to 1.8m wide and little over 1.5m tall (with a 2655mm wheelbase) the CX-30 is in the middle of the pack it competes with in terms of key dimensions.

And space up front is more than adequate, with an impressive feeling of roominess for a relatively small SUV.

For storage, there’s a large lidded box (which doubles as an armrest) between the front seats as well as a pair of cupholders in front of the gear-shifter with a bay for wireless device charging ahead of that.

The glove box is big, there are bins in the doors with room for decent size bottles and a drop-down tray for sunglasses sits overhead.

Move to the rear and the amount of space on offer is surprisingly generous. Sitting behind the driver’s seat, set for my 183cm position, I have plenty of head and legroom, although three full-size adults across the back seat will be an uncomfortable proposition for anything other than short trips. A trio of up to mid-teenage kids will be fine.

Adjustable air vents at the back of the front centre console are a welcome inclusion for back-seaters and storage runs to a map pocket (weirdly, on the back of the front seat only), a pair of cupholders in the fold-down centre armrest and bins in the doors with room for smaller bottles.

In-cabin power and connectivity includes two USB-C outlets and a 12-volt socket in the front centre storage box. No USBs specifically for those in the rear, which is a miss for road trips and no 12V in the boot which can be handy when camping or picnicking.  

Speaking of the boot, cargo volume with the rear seat upright is okay for the class at 317 litres, which expands to a healthy 1479L with the 60/40 split-folding backrest lowered. For comparison the Kia Seltos coughs up 433L with the rear seat upright.

The space is illuminated, there are tie-down anchors to help secure loose loads and there’s a space-saver spare sitting under the floor.

And if you’re keen on towing a tinnie or similar you’re good to go for a 1200kg braked trailer (600kg unbraked).

That tidy design inside helps when it comes to making use of the space, as well as offering some generous storage spaces.

For starters, while the clean layout means the screen looks like the main point of access for much of the car’s function, there’s an all-important shortcut button for the climate control which means you don't waste time navigating to the vent and temperature controls.

The only issue is that while my phone was connected to the system for Android Auto, I had to navigate away from the mirroring screen back to the MG3’s home screen before being able to shortcut to the climate settings.

Demister and volume control buttons are also present, but the screen itself has an easy-to-navigate menu.

The steering wheel controls are similarly straightforward and clearly labelled, while the driver display is tidy and shows important information clearly.

While the steering wheel isn’t telescopically adjustable, it's easy to find a comfortable seating position thanks to the adjustability of the seats. The material on the seats doesn't feel rough or cheap.

Behind that, there is enough space for my 178cm frame in the second row for the most part, but headroom isn’t incredibly generous.

The rear pew is a single unit, rather than a 60/40 split, so the whole backrest folds down if you need to load anything long through the boot. There’s not even an armrest or little ski hatch for long, thin items.

Its 293-litre boot isn’t small, and there’s a space-saver spare tyre in both petrol variants, but the hybrids are stuck with repair kits.

Even though it’s now more expensive with its $23,990 before on-roads price, it’s hard to deny the petrol-only MG3 Excite is a compelling offering when it comes to inexpensive runabouts.

Not only has the price been bumped up, but so has the apparent interior quality and features list.

A new 13.25-inch multimedia touchscreen is paired with a 7.0-inch driver display and both look pretty slick for the price point and operate well. 

Apple CarPlay and Android Auto are both available, but are wired only and can’t be accessed with a Bluetooth connection, while a six-speaker sound system handles entertainment duties.

In terms of seating and material, the Excite gets cloth pews with some contrast stitching.

On the outside, folding mirrors and a set of 16-inch alloy wheels join the new MG3’s design, while this base model Excite is left with halogen headlights like it’s 2015. 

The Essence scores a set of LED units and is otherwise distinguishable by its sunroof, though it shares the same wheels as our base car, so it won’t feel like you’re missing out on heaps.

The CX-30 GT SP is powered by a 2.5-litre, naturally aspirated, four-cylinder petrol engine producing maximum power of 139kW at 6000rpm and peak torque of 252Nm at 4000rpm.

It’s a proven all-alloy unit featuring direct-injection as well as variable intake and exhaust valve timing with drive going to the front wheels via a six-speed auto transmission. 

The AWD version of the GT SP adds an electromagnetic multi-plate clutch pack (managed by a multitude of sensors) to selectively engage the rear wheels, as well. But its engine and transmission combination is identical to this FWD model’s.

On paper, the MG3’s 1.5-litre four-cylinder engine is fairly underwhelming with its 81kW (peaking at 6000rpm) and 142Nm (at 4500rpm).

But these figures, including the engine size and even peak RPMs are not far off the likes of the Mazda2, which is a fairly peppy and fun car despite its lack of grunt.

Keen drivers will, however, be disappointed to hear the MG3 drives the front wheels via a continuously variable transmission (CVT) rather than a traditional torque-converter auto, taking much of the pep out of its power unit.

You can expect to hit 100km/h in a bit over 10 seconds.

The CX-30 GT SP FWD’s official fuel consumption figure on the combined (urban/extra-urban) cycle is 6.6L/100km, the 2.5-litre atmo four-cylinder engine emitting 154g/km of C02 in the process.

It features fuel-saving stop-start and cylinder deactivation functions as standard and over a combination of city, suburban and some freeway running we saw an average of 8.4L/100km, which is average for an SUV in this class. A comparable hybrid package would easily better this result.

Based on the car’s 51-litre fuel tank theoretical range between refills is 772km, which drops to just over 600km using our real-world test consumption number. But the good news is this CX-30 runs happily on cheaper 91 RON ‘standard’ fuel.

MG claims the MG3 uses just 6.0 litres of 91 RON petrol every 100km on the combined fuel cycle, so with its 45-litre tank you can hypothetically bank on a 750km range.

Of course, that might be achievable in lab conditions, but on test we found the trip computer’s estimates looking closer to 500km on a tank for the kind of urban driving it was undertaking with us.

On a dynamic test drive route, the trip computer settled at a displayed consumption figure of 7.7L/100km, but stop-start driving was not great for efficiency, as you'd expect.

It’s rare in 2024 to find a small SUV that doesn’t have at least one turbocharger attached to its engine, the CX-30’s 2.5-litre ‘atmo’ four being one of those increasingly scarce examples.

But Mazda’s been laser-focused on extracting maximum power and efficiency from its non-turbo petrol engines for yonks and this one stands up well.

It doesn’t have the low-down punch a turbo typically delivers but maximum pulling power arrives at a useable 4000rpm and it’s eager enough for easy city and suburban running as well as confident freeway cruising.

Although Mazda doesn’t quote an official number you can expect a sprint from 0-100km/h in around 8.5 seconds, which is quick for the class.

Worth noting engine noise and a raspy exhaust note make their presence felt under acceleration and the throttle isn’t as refined as it could be. Not a huge deal, but a slight jerkiness is evident on initial, especially moderate, acceleration.

The six-speed auto is smooth and fuss-free, the steering wheel paddle shifters on hand if you need to intervene and select a specific ratio. ‘Sport’ mode peps things up, causing the transmission to shift down earlier and up later. But it’s aggressive in that it often holds onto a gear for too long and you find yourself diving back to the default normal setting.

Tipping the scales at just under 1.5 tonnes, the CX-30 is underpinned by a MacPherson strut front, torsion beam rear suspension and ride comfort on typically pock-marked urban surfaces is average for the category. That is, a bit jittery over bumps and corrugations but there’s no bone-jarring going on here.

Steering feel and response is good and the grippy steering wheel helps with a connection to the front tyres. Speaking of which, the standard rubber is high-performance (215/55) Dunlop SP Sport Maxx 050 which is  grippy and commendably quiet. 

Push on into a corner and the CX-30 remains balanced and predictable with body roll well under control. Torque vectoring, by engine and physical braking, is also onboard to reel things in if you overstep the mark.

Braking is by discs all around, vented at the front and solid at the rear, and they wash off speed effectively with a satisfyingly progressive pedal action.

Vision is good, which combined with the CX-30’s compact dimensions and 10.6m turning circle, means parking is easy. Especially when you factor in the hi-res reversing camera and front and rear parking sensors. 

The higher quality look and feel of the new MG3 carries through to its day-to-day driving. Some of the car’s Chinese compatriots seem to fall down when it comes to the on-road part, which for some is the most important part of a car.

But for a small city car the MG3 is very user friendly, with light and direct steering, good visibility, and just enough power and torque to not feel like everyone’s getting the green light a couple of seconds earlier than you.

It’s comfortable at urban speeds when it comes to the suspension, and doesn't get rattled too much in the front end by tram tracks or other road imperfections.

In narrow streets, three-point turns aren’t a hassle and the car’s size means it’s easy to reverse parallel park, although the reversing camera takes a second to appear when using phone mirroring.

On the highway, however, and when it comes to high-speed cornering, the MG3 can feel a little uneasy.

The road noise becomes more and more obvious. Driving on well-maintained metro freeways at around 80km/h or above produces unpleasant noise, and a during a particularly breezy week the car felt susceptible to swaying in high wind.

Its power delivery starts to feel lacking out of town, too, and taking corners on fast back roads means plenty of slowing down to avoid the front-end sliding or the feeling of the MG3 leaning unsettlingly around corners.

If you’re considering the MG3 but you need to head out of town regularly, take a proper long test drive before opening your wallet.

But if you just need it as an urban runabout, the MG3 does a fine job.

ANCAP hasn’t tested the MG3 yet, so there’s no crash safety information available. It’s worth noting ANCAP gave the MG5 a zero star score for its lack of active safety equipment, but the MG3 comes with more under its belt than its sedan stablemate.

Six airbags, two front, two side and two curtain, are joined by adaptive cruise control, blind spot detection, rear cross-traffic assist, forward collision warning, lane departure warning, lane keeping assist and speed limit assist.

None of these systems were intrusive on test, though lane-keep assist feels like it could do with some more fine tuning.

Mazda covers the CX-30 with a five-year/unlimited km warranty which is the norm in the mainstream market, and it’s worth noting a growing number of competitors are now at six, seven or even 10 years, although the latter are typically conditional on authorised dealer servicing. Roadside assistance is provided for the duration of the warranty.

Service is recommended every 12 months or 15,000km and Mazda’s ‘Service Select’ program sets maintenance pricing out to seven years, the lowest over that period being $352 and the highest $626, for an annual average of $459, which is reasonable but not exceptional for the category.

For comparison, a similarly specified Toyota C-HR averages $330 per workshop visit over the same period.

MG has a 10-year/250,000km warranty which is unmatched in the small-car market.

Servicing is scheduled at every 10,000km or 12-month intervals, with the first seven services averaging out at a fairly hefty $360 - the cheapest being $234 and the priciest $536.