Mazda MX-30 vs BYD Sealion 8

What's the difference?

The MX-30 is a tough one to give you a clear verdict on. In summary, though, the math just doesn’t add up. This car is way too expensive and offers next to no range for Australia’s vast intercity distances, essentially resigning buyers to a life within city limits.

On the other hand, I love the design ethos of this little SUV. It’s truly a statement, and it’s rare to find a car that is so committed to its uniqueness. It’s also easily one of the best EVs to drive right now, so those who understand its compromises will no doubt be left with smiles on their faces.

There’s no denying the value the BYD Sealion 8 Premium offers as it packs a lot in for the price. Its efficiency and inoffensive looks add up to a good package and reflect what it does well. That said, the underwhelming driving experience and clunky media system are noticeable. Whether they're deal breakers is up to you.

The MX-30 oozes design. I would go so far as to say this car is more focused on being a design statement than it is an SUV (as evidenced by its lack of practicality…) or an EV (as evidenced by its lack of range…).

Mazda’s Kodo design language is already eye-grabbing, so it’s to the MX-30’s credit that it manages to be striking, even against other members of the Mazda family, as it strays from a well-refined formula.

The large grille has been dumped in favour of something much smaller but the 3D effect of the Kodo face still persists. The light clusters adopt their own personality - they're inspired by the Mazda3, arguably, but they stand on their own.

The side profile, squat dimensions, and contrasting panel work (in our car’s case, a matte grey against the brand’s signature ‘Soul Red’) alert you to the fact that the MX-30 is something quite different indeed. And all this is before you notice the fact that it has clamshell rear doors.

Yep, that’s right, the MX-30 reaches into the brand’s history and brings back the outward folding door design once seen on the RX-8 rotary sports coupe. Opening it up is an event, and those doors wow onlookers with their unusual unfurling. Unfortunately, it’s not as smart as it looks, but we’ll get to that in the practicality part of this review.

The inside again blends familiar Mazda themes with entirely new ones. The material design is incredible. For the first time in a long time, I felt like a kid in some kind of tactile science museum, prodding, squeezing, and scratching at this car’s many interior elements to see if they were, in fact, made of the occasionally unbelievable materials they seem to be.

It doesn’t disappoint. Yes, the door cards really have a splash of an odd grey carpet material, very Volvo, the seats are really trimmed in some sort of synthetic leather, the quality grain of which has to be felt to be understood (it's very Mercedes), and the centre console is really made of recycled cork panelling, which is very BMW.

All of this might sound a bit silly (and the cork stuff perhaps is) but along with the stepped centre console design, weird semi-digital dash cluster and familiar bits out of other Mazdas, it is difficult to not enjoy being in such a creative and unusual space.

The commitment to this funky, unusual design, has some major practicality drawbacks, which we’ll take a look at next.

The Sealion 8 is a big unit, and its design leans more towards soft and rounded than sharp. There’s a sense of restraint with its pillowy panels, smooth curves and flush door handles all contributing to a clean, almost clinical look.

The 21-inch wheels add a bit of presence, as does the full-width LED light bar with its braided design. But overall, it doesn’t try too hard to stand out. It’s inoffensive - clean and easy on the eye, but it stops short of having any sense of identity.

Inside, the cabin carries that same restrained approach. There’s black leather upholstery, some interesting geometric detailing through the panels and speaker grilles and a generous use of soft-touch materials throughout.

The large displays and panoramic sunroof help lift the space, giving it a premium feel, but more importantly, it’s just a comfortable, easy place to spend time. Which, for a family SUV, arguably matters more than anything else.

Put simply, the MX-30 is about as practical as a sports coupe, which is a feat given it has the footprint and height of an SUV.

It starts with those clamshell doors. Sure, they look amazing, but they’re annoying to open because the handle is on the inside, so you have to open the front doors before you can open the rear ones. At best this costs you time when you’re just trying to load objects, pets, or kids, at worst it makes the rear of the cabin nearly impossible to access in a tight car park.

Even in my unit parking spot, I could barely access the rear seats, making it especially annoying when I just wanted to chuck a bag in the rear footwell.

Even if you don’t have trouble getting an adult back there, space is limited. Behind my own driving position, my knees were up against the seat in front, and while I had plenty of headroom, it feels a bit claustrophobic, thanks to the tiny windows and high beltline.

I’ll hand some credit to the commitment to this car’s design, though, the odd carpet trims continue into the rear doors, and there's even a plush padded surface for your elbows on either side. Nice touch. The seats also feel unusually low and sporty for an SUV, particularly an electric one.

As if it couldn’t be more clear that this car has the intention of being some sort of sports coupe, the front seats are lovely. Comfortable, supportive, and with plenty of soft trims throughout the cabin, I felt as though I had plenty of room here. The raised console design means the multimedia functions and toggles were easy to reach and use, and while the climate functions are somewhat awkwardly placed on a touch panel, at least they were set and forget most of the time.

There’s a tactile dial for volume control, and although the multimedia interface is dial-based rather than touch, Mazda’s system is one of the easiest to use once you get used to it.

There’s a large storage area under the centre console, hosting two USB ports and a household power outlet, and atop that there’s a cork-finished tray, which flips up to reveal dual bottle holders in the centre. Behind this there’s a small armrest console box, trimmed in the same plush padding as the doors and seats. Front occupants can also make use of small pockets in the doors and a glovebox.

Unlike some electric cars, the MX-30 doesn’t score a ‘frunk’, which seems like a wasted opportunity because the engine bay is half empty. Serviceable items look incredibly easy to access because of this, with liquid tanks and coolant hoses on display, but I can’t help but feeling Mazda could have put a small storage space here with some packaging trickery. It’s equally possible that there’s a crash-safety consideration, however.

Moving to the boot, and unfortunately there’s a small-hatch-sized 311 litres on offer, because there’s also next to no underfloor space, and you’ll have to store your charging cables in there, too, further reducing the space. With the cable bags strapped in place, the boot fit our largest (124L) CarsGuide travel case with little extra room to spare. It’s weekender luggage space at best, but then I suppose you won’t be able to go away for long with the range on offer anyway…

Up front, storage and general usability are well thought out. There’s a handy shelf tucked underneath the centre console with two USB-C ports, while a tray above houses the fast wireless charging pad. You also get a sunglasses holder, two cupholders and decent-sized bottle holders in the doors, so it’s easy to keep things organised.

Seat comfort is a highlight, and the overall layout is clean and easy to live with, but the same can’t be said for the multimedia system. While the graphics are sharp and the touchscreen is responsive, functionality isn’t always its strong suit. Wireless Apple CarPlay and Android Auto are included, but CarPlay required reconnecting on every drive during testing and the digital radio and phone calls experienced noticeable signal dropouts. It’s the kind of friction that chips away at the day-to-day experience and starts to feel out of step with how polished the rest of the cabin is.

There’s also a heavy reliance on the screen for core functions. Climate control is integrated, which is fairly standard, but so too are things like headlight controls. It might suit those who are used to navigating everything through a screen, but needing to dig through menus to adjust something like auto high beam on the move feels like a step too far. Bring back buttons.

The second row is where the Sealion 8 really leans into its family-friendly brief. Space is generous, with enough width to comfortably accommodate three adults and the flat floor helps here too. There are three top tether points and two ISOFIX mounts, while charging is covered by a USB-A and USB-C port.

Amenities are a standout. The outboard seats mirror the front with heating, ventilation and massage functions, which quickly become a favourite, alongside dedicated climate controls, roof-mounted air vents and multiple cupholders. A set of sunshades would round things out nicely, but it’s otherwise a very accommodating space.

Access to the third row is less impressive. The manual slide and tilt mechanism feels a little heavy and fiddly to operate and the space itself is best reserved for kids. In practice, that means younger passengers will likely take the path of least resistance, as mine did and simply climb over the second row instead.

Amenities are fairly basic, with directional air vents and cupholders, but there’s no charging provision back there. You do, however, get two top tether points and ISOFIX mounts, which will be a plus for larger families.

Around the back, the boot is a practical, usable space with a wide opening and flat loading floor. With all three rows in place, there’s 270L on offer, which is enough for a few school bags or a grocery run, expanding to 960L with the third row folded. There’s no spare tyre, just a repair kit, which may be a consideration for regional drivers. A 12-volt socket and powered tailgate round things out in this grade.

The BYD Sealion 8 range is relatively straightforward, with two grades on offer and the base variant available with a choice of two drivetrains. For this review, we’re in the flagship Premium AWD, which is priced from $70,990 before on-road costs.

It lines up against the Chery Tiggo 9 Super Hybrid at $65,430 driveaway, the Kia Sorento GT-Line PHEV from $71,130 before on-roads, and the Mazda CX-80 P50e Azami, which stretches up to $87,950 before on-road costs.

On paper, the Sealion 8 Premium doesn’t quite undercut the Chery on price or match its claimed 170km (NEDC) electric-only range, but it’s not far off, with a still-impressive 152km (NEDC). And when you look at the broader package, it starts to make a fairly strong value argument, particularly against its other key rivals.

The 'Premium' badge isn’t just for show, either. Equipment is generous, with highlights including a fixed panoramic sunroof with an electric sunshade, leather-appointed upholstery, a heated steering wheel, and heated, ventilated and massaging seats not just in the front, but for the outboard seats in the second row as well - a feature that hasn’t gone unnoticed by my nine-year old.

Technology is a clear focus. There’s a 10.25-inch digital instrument cluster, a large 15.6-inch touchscreen multimedia system and a 26-inch augmented reality head-up display, alongside wireless Apple CarPlay and Android Auto, a 50W wireless charging pad and a 21-speaker DiSound audio system. BYD also includes 2GB of data per month for the first two years to support its 4G connectivity and over-the-air updates.

Practical touches round things out, with keyless entry and start, NFC card access and a digital key via the BYD app, a powered tailgate, vehicle-to-load (V2L) capability, rain-sensing wipers, sound insulation for the front doors and windscreen and three-zone climate control.

The MX-30 has an electric motor on the front axle with a single-speed reduction-gear transmission. It produces low-sounding figures of 107kW and 271Nm of torque, which is less than most of its rivals, although it has more power and less torque than the equivalently sized (but much cheaper) MG ZS EV.

Although these power figures don’t look as impressive as rivals, it’s worth remembering that the MX-30 has much less weight to carry around, so when it comes to driving it’s a much better story than it appears. More on that later.

The MX-30 offers three levels of regenerative braking, controlled through the wheel-mounted paddle-shifters, a necessary touch, and one that offers decent feedback on how your driving style is affecting range, via the dash and multimedia screen.

The BYD Sealion 8 Premium is all-wheel drive and pairs a 1.5-litre, four-cylinder, turbo-petrol engine with two electric motors, one on each axle. Combined outputs sit at a hefty 359kW and 675Nm, which comfortably out-muscles its key rivals.

Those figures do drop back to a more modest 110kW and 220Nm when running on the petrol engine alone.

Performance is strong for a large family SUV, with a claimed 0-100km/h sprint time of 4.9 seconds. You can toggle between pure EV and hybrid modes depending on the drive, which adds a layer of flexibility that suits short daily trips and longer highway runs.

The MX-30 has some advantages here, in that its tiny (35.5kWh to be precise) lithium-ion battery pack means it charges up pretty quickly. The downside? It’s not as quick as it could be, and its efficiency leaves a little to be desired.

As already discussed at length, this small battery means a very short range – between 200 and 224km depending on which standard you want to go by, and the MX-30 is claimed to consume 18.5kWh of energy on the combined cycle.

This is disappointing because not only is the claim higher than rivals like the Kona electric and Nissan Leaf, but in reality, I couldn’t best it with predominantly city driving, as I have previously been able to in all its rivals. Over some 250km of testing I managed a dash-reported 18.9kWh/100km.

The MX-30 EV takes a European-standard Type 2 CCS charger, the most popular kind in Australia, and will charge up at a rate of 50kW on DC or 6.6kW on AC.

It would have been nice to see that boosted to at least 7.2kW AC to be a bit more competitive on AC charging speed. For a car that will need to be charged frequently, even a 10-minute difference in charging time is important. While 50kW DC is about right for a battery pack this size, I assume there will be cooling issues pushing that to 100kW+ as the Hyundai Kona electric and Tesla Model 3 with nearly twice the battery size are capable of.

Mazda estimates a charge time of 36 minutes on DC, three hours on a three-phase AC charger, or nine hours from a ~2.4kW wall outlet. I charged my MX-30 a single time before returning it, from about 10 – 80 per cent, with it maxing out at around 50kW. It charged in less than 40 minutes, however, as promised.

Charging is handled via a Type 2 CCS port, with support for up to 11kW on AC and up to 74kW on a DC fast charger. BYD claims a 30 to 80 per cent recharge can be done in as little as 20 minutes under ideal conditions.

The 35.6kWh lithium iron phosphate (LFP) battery is a standout, delivering a claimed electric-only driving range of 152km on the NEDC cycle. That figure is on the optimistic side compared to WLTP testing, but even with that in mind, it remains an impressive number for a plug-in hybrid of this size.

With a full battery, the combined fuel consumption is rated at just 1.0L/100km, translating to a theoretical driving range of over 1000km. Real-world results will vary depending on how often you’re able to charge and the type of driving you’re doing, but after a week that included a fair stretch of highway driving, my trip computer was showing 6.3L/100km. Overall, it’s a solid result, particularly for something with this level of performance.

Usually, it’s easier here to talk about how electric cars are different from their combustion counterparts, or how they are great for an electric car. In the case of the MX-30, however, it’s just a great car to drive.

I’ll admit, I didn’t expect this little EV to match, much less exceed the driving experience of its CX-30 sibling, but it was a pleasant surprise to find out how great it was.

It turns out that having a much smaller battery, and therefore a much lower kerb weight than most EVs, means the MX-30 feels light, agile, and rapid compared to all of its rivals, which goes some way to making up for its lesser outputs.

In fact, I had no trouble with the motor at all, with the MX-30 feeling faster and more responsive than the Hyundai Kona electric or the Kia Niro EV.

Mazda’s handling prowess is also on full show here, with the smooth and accurate steering allowing me to point this little SUV with remarkable accuracy. The steering tune is lighter than the Kona electric, but a bit more significant than the Kia Niro's. It emboldens you to have a bit of fun, and again, unlike rivals, Mazda’s suspension tune has your back.

It’s sporty enough to engage you, but not so firm that it sends tremors through the cabin, an impressive feat considering it has a less complex torsion bar rear. If anyone had asked me, I would have sworn it was multi-link all-round.

The whole experience feels very similar to helming the CX-30 or Mazda3, but I’d even say the MX-30 feels better over the front end, with less rough rebound than its siblings.

It also makes a cool noise. Mazda have given the MX-30 an artificial tone, plumbed through the speakers, and unlike the science-fiction hum generated by the Hyundai group EVs, the Mazda’s is a warm drone, more reminiscent of a combustion engine.

To be clear here, the MX-30 is no Tesla Model 3. That car is seriously rapid, with mind-bending handling, although I will say there’s a certain poise and refinement to the way the Mazda drives. Even in the corners, it’s confidence inspiring, with the torque-vectoring magic built into the electric motor on full show.

Perhaps one of the reasons that this car is a tad less efficient than its rivals is its lack of weight, which would allow more energy to be fed back into the battery during regenerative braking. Or perhaps its regen braking modes are a bit too forgiving, either way it’s nice that the Mazda offers three easily controllable levels via the paddle-shifters. I even became a fan of the quaint analogue power dial, even if it does give you a bit less feedback than the sleek software suites in Hyundai Group or Tesla offerings.

The MX-30, then, hits an unexpected niche. The benefits of its smaller battery pack and a focus on handling make this car one of the best EVs to drive today, even if you’re restricted to city limits, and regular recharging.

On-road performance is where things become a bit of a mixed bag. There’s no denying the Sealion 8 Premium is quick and it leans more heavily into its EV character than many large plug-in hybrids. It’s quiet in hybrid mode and responsive off the mark, which makes it easy to keep pace in traffic and overtake when needed. For something of its size, it also does a good job of masking its weight on the move.

Regenerative braking is offered in two levels, but even the stronger setting feels fairly mild. The upside is smoother low-speed driving, with none of the abruptness you sometimes get in hybrids, and it does still recover a decent amount of energy, particularly on longer descents.

Where it falls short is in its overall dynamics. The steering and suspension are tuned for comfort, which results in a soft, slightly floaty feel on the road. It’s not unpleasant and around town it actually suits the car’s brief, but there’s a noticeable lack of feedback and control if you’re expecting something more composed.

Visibility and driver positioning also take some getting used to. The forward view is decent, but the pillars are quite thick and it can be difficult to find a driving position that doesn’t feel a little enclosed.

Judging the edges of the car isn’t always intuitive, and while the 360-degree camera is clear, its perspective can feel slightly off. Objects tend to appear much farther away than they are, which isn’t the most reassuring combination when you’re trying to manoeuvre in tighter spaces.

The BYD Sealion 8 is yet to be tested by ANCAP and therefore remains unrated at this stage. That said, it comes equipped with a comprehensive suite of safety features, along with nine airbags including side chest airbags for the front and second rows.

Standard equipment includes seatbelt reminders for all seating positions, front and rear parking sensors, driver attention monitoring and alert, tyre pressure monitoring, traffic sign recognition and autonomous emergency braking. It also features front and rear collision warning, blind-spot monitoring, rear and front cross-traffic alert and side exit assist.

On the road, however, some of the active safety systems are less polished in execution. The adaptive cruise control can feel abrupt when slowing down and slow to regain speed, while the steering assist can be overly reactive through corners. Lane keeping also lacks consistency, with the system not always engaging as expected.

For families, child seat provision is strong, with four ISOFIX anchor points and five top tether mounts across the cabin, along with child presence detection.

The MX-30 is covered by Mazda’s industry-standard five-year and unlimited kilometre warranty, while the battery pack is covered by a separate eight-year promise, on par with its Korean rivals. Mazda includes roadside assist for the duration of the warranty.

The EV has service intervals of 12 months or 15,000km whichever occurs first, and a five-year service plan comes in at $1273.79, working out to an average of $254.76 a year. That’s getting close to Toyota levels of cheap servicing, and so it should, given electric cars (at least in theory) have much less to attend to when it comes service time.

BYD offers the Sealion 8 with a six-year/150,000km warranty and an eight-year or up to 160,000km battery warranty. Both terms are competitive for its class.

Service is recommended every 12 months/20,000km with each workshop visit averaging a solid $596 for the first five years (year four is $1360). Accessing a BYD service centre is fairly easy as there are around 70 centres nationwide now.

BYD recommends premium unleaded petrol (95RON) to be used for the Sealion 8.