Mazda MX-30 vs BYD Sealion 5

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.

While the BYD Sealion 5 lacks the polish of some more established plug-in hybrids, it has a seriously compelling price advantage over some competitors. It makes a base-model Mitsubishi Eclipse Cross PHEV feel positively outdated and it’s $13,800 cheaper.

BYD's lack of ANCAP rating for the Sealion 5 and the uncertainty around it still being a new brand are downsides, even if BYD is quickly moving past the latter. But being the most affordable PHEV available while having this much showroom appeal is bound to work in the Sealion 5’s favour, just don’t expect a dynamic masterpiece once you’re out on the road.

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 BYD Sealion 5, from the outside, is inoffensive but also uninspiring. That’s likely not such a bad thing for a mid-size SUV – it’s rare you’re hearing someone talk about how beautiful the Mazda CX-5 or Toyota RAV4 is. 

Its quartet of colour palette options comes in on the safe side, too. Aurora White is standard, Atlantis Grey, Harbour Grey and Cosmos Black are cost-options.

Our test car is Atlantis Grey, which is interestingly quite blue. 

The relatively upright shape is a slight departure from the more ‘aquatic’ silhouettes of BYD’s line-up, but the front grille and light layout are decidedly in step with the brand’s oceanic design language. There’s a bit going on, you could say.

The slimline tail-lights are the rear, especially from a three-quarter angle to the side, look attractive and help break up the rear without looking messy.

The Sealion 5’s design is overall net-good, but it’s inside where the mid-sizer feels like you’re getting plenty for your dollar.

The seats, despite the leather fakery, feel like decent material, and the layout uses buttons and physical controls cleverly without feeling outdated.

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…

To actually interact with the interior is, at times, another story. BYD’s tech interface is generally easy to manage, but could be simpler when it comes to navigating menus for the sake of driver distraction.

While larger text and buttons would be welcome, the multimedia system is easy to use when parked, and the functionality is impressive for the price point.

Winning more points for the Sealion 5, though, are the physical controls – buttons and the traditional gear selector – which make the cockpit much more intuitive while on the move.

Ergonomically, though, the adjustment between the steering wheel and driver’s seat could do with some work, as I found it difficult to find a truly comfortable driving position. This is coming from someone 178cm tall, a very normal height in Australia.

Better adjustability on the steering column would be helpful, as it’s something I’m not sure I’d ever get totally used to.

Visibility and physical space inside the Sealion 5 is impressive, though. The car is 4738mm long, 1869mm wide and 1710mm tall, and the roof and window lines don’t swoop too aggressively towards the rear.

There are low window shoulders even into the rear, so light isn’t at a premium, though under-leg support could be better on the pew.

It’s otherwise un-cramped. The 2712mm wheelbase means decent legroom for second-row folk, plus behind the 60/40 split-fold seats there’s 463 litres of space for luggage. That becomes 1410L with the seats folded.

There’s unfortunately no spare tyre, just a tyre repair kit.

The BYD Sealion 5 Essential kicks off from $33,990 before on-road costs, four big ones less than the Premium ($37,990). We’re focusing on the Essential today, but don’t think that means a shallow list of features.

As you’d expect from BYD if you’ve been paying attention to the Chinese brand in its emergent years, the Sealion 5 comes with more than $34K would normally get you – a 10.1-inch central multimedia touchscreen, an 8.8-inch driver display, synthetic leather upholstery, dual-zone climate, a six-speaker sound system, wireless Android Auto and Apple CarPlay, USB-A and -C ports front and rear, digital radio and keyless entry.

On the outside, LED headlights and tail-lights are the same for both variants.

Both also have 18-inch wheels, not unwelcome for the benefits of on-road comfort.

Consider that the most popular SUV in the country, the Toyota RAV4, costs at least $45,990 without the benefit of a plug-in drivetrain (yet) and comes with, on paper, a more sparse list of features.

The closest PHEV competitors are still more pricey, including the Geely Starray ($37,490) and Chery Tiggo 7 ($39,990), and arguably lack the brand power BYD has come to enjoy.

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 Sealion 5’s front wheels are driven by a combined maximum of 156kW thanks to a 1.5-litre four-cylinder petrol engine (145kW/300Nm) and a permanent magnet synchronous motor (72kW/122Nm).

BYD claims a 0-100km/h sprint of 7.7 seconds for the Sealion 5 Essential, four tenths faster than the Premium despite only a 61kg difference in kerb weight.

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.

With a charged 12.9kWh lithium iron phosphate (LFP) battery and a full 52-litre (95 RON minimum) fuel tank, BYD reckons the Sealion 5 Essential can cover 1001km under NEDC testing, which is optimistic. It claims 71km can be done on EV power alone.

Not only due to the lenient nature of NEDC testing (WLTP is more common and usually results in lower ranges), but the reality is that once the battery is flat, the engine is doing a lot more work.

Charging is slow, limited to 3.3kW (AC only), which should take between 4 and 5 hours to charge from the lower end of the gauge for the battery size. Given most PHEV owners will do this overnight at home, that’s certainly not the end of the world.

Claimed consumption figures are 1.2L/100km with more than 25 per cent battery charge, or 4.5L/100km when it dips below that.

Realistically you could do sub-50km trips and use no fuel, or never plug your Sealion 5 in and see fuel consumption soar. In any case, anything close to 1001km in a single run is extremely unlikely.

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.

You might expect a car at this price, regardless of its drivetrain, to be underwhelming from behind the wheel.

That, then, makes it even more pleasantly surprising that the BYD Sealion 5 is actually rather competent. Not massively exciting or dynamic, but certainly not a disappointment.

The Sealion 5 is, save for a couple of arguably minor annoyances, quite easy to get used to and drive.

Firstly, when making proper use of its electric power, the drivetrain provides enough shove for its intended use. It’s not overly powerful, but you won’t have trouble overtaking. It’s the same with most of the inputs, the steering is light but not completely numb – again about right for how the Sealion 5 will be driven.

Perhaps its biggest departure from expectations based on other cars from China is its suspension is on the stiffer side of things, but again it’s not unruly or too rugged. In fact, it does provide a better sense of control than many of its compatriots.

Again, the biggest issue with the Sealion 5 day-to-day is its driving position, the steering column adjustment isn’t up to scratch and there’s not really a perfectly comfortable seating position (I’m a very standard 178cm).

On long trips, you might also find the engine gets quite noisy once the battery power is gone as it works hard to pull the mid-size SUV along under acceleration.

Its driver-assist systems are, you might be pleased to hear, on the calmer side of things – BYD is getting better at calibrating its safety features and I didn’t find myself rushing to switch it all off as quickly as usual.

It can still be a bit too persistent in its lane-keeping, but it’s a big improvement on the way things were.

There’s no ANCAP rating for the Sealion 5, but the list of safety kit isn’t lacking on paper.

BYD lists seven airbags ,including full-length side-curtain bags and an important centre airbag, plus there’s a whole suite of tech that’s, as noted, better behaved than past driver-assist systems from BYD.

The Essential only misses out on a surround-view parking camera and front parking sensors, both arguably important safety features for parents, but the rest of the list is the same as the Premium including adaptive cruise control, lane-keep and lane departure assist, traffic sign recognition, blind-spot monitoring, rear cross-traffic alert with rear AEB (as well as front AEB, of course) and tyre pressure monitoring.

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 has a six-year/150,000km warranty, which is probably more than you’d need in terms of distance but is behind many competitor brands’ timelines – seven to 10 years is becoming the norm, even if it’s conditional.

An eight-year/160,000km warranty covers the battery, which is about par for the industry.

Servicing for the first five proper services ranges from between $285 and $930, plus there's a free check-up six months into ownership and a total cost over the span of $2355 – an average of $471 per service.

BYD has just over 100 dealerships in Australia, so finding one for servicing shouldn’t be too challenging.