BYD Sealion 6 vs Hyundai Ioniq 6

What's the difference?

So, should Toyota, Tesla, Hyundai and others be worried about the arrival of the Sealion 6 and BYD’s new DMi powertrains? Yes, but not because it represents any major breakthrough in technology or dynamic prowess. 

Instead, the strength of the Sealion 6 is how average it is. It may not be the obvious class-leader in any particular area, but it does a good job in almost every measurable aspect and doesn’t possess any major flaws.

Yes, there are still questions about the long-term dependability of BYDs but that’s a risk any new owner will need to accept. But the very sharp pricing should tempt plenty of buyers to take that chance and continue BYD’s steady upwards trajectory in the Australian market.

In the Ioniq 6 N Hyundai has built an incredibly quick and high-capable performance car. But that doesn’t mean it’s flawless and an obvious recommendation over its rivals.

Its looks remain divisive, and while obviously each individual will need to judge the design of the Ioniq 6 N themselves, objectively speaking there is a lot to like about this latest addition to Hyundai’s N stable. 

Yes, it’s very fast, but with all the N modes switched off it’s also a very quiet and relaxed sedan with a premium look and feel. So it will play the dual role of track terror and everyday family transport well. 

But it needs to be for the price, which is really testing the limits of Hyundai’s brand appeal. It obviously won’t be a best seller, but with the less-polarising Ioniq 5 N only selling approximately 300 cars since its launch, this could be a very niche proposition, reserved only for those who crave its special kind of electric performance.

Note: CarsGuide attended this event as a guest of the manufacturer, with accommodation and meals provided.

This is one area where BYD has a mixed record. Not to be unkind or create an international incident, but the Chinese car industry has a history of not being totally original with all of its automotive designs.

However, things are improving and the Sealion 6 is a good example of the Chinese industry learning to develop its own style. While there are some subtle hints from European models, overall it’s a smart-looking mid-size SUV with some character to it - rather than being a bland imitation of something else.

One area where the Sealion is a cut above its competition is its size, being longer than and wider than the RAV4, Mitsubishi Outlander and Nissan X-Trail.

The original Prophecy concept, which previewed the Ioniq 6, was a thing of beauty, a case study in elegance and simplicity. The final production version of the Ioniq 6 is a case study in awkwardness, with a design that polarised opinions.

For the Ioniq 6 N Hyundai has been given a second chance to try and make it look more appealing and less divisive. To that end they’ve added this gloss black bumper with an integrated splitter, highlighted by the N-specific fluro orange strip, as well as unique fenders and 20-inch forged alloy wheels.

The facelift also introduces much more appealing slimline headlights that help reduce the awkwardness.

At the rear, there’s a new rear bumper design, with more black to try and hide some of its most awkward lines, plus an unmissable rear wing to further attract your attention. And while it undoubtedly provides a sportier, more dynamic look, it actually provides up to 100kg of downforce.

Inside, Hyundai has made a number of key enhancements to ensure the Ioniq 6 N looks suitably sporty. There’s a sports steering wheel, complete with a pair of N buttons to immediately activate the more dynamic driving modes, plus sports seats and even a soft knee pad built into the side of the centre console, so you can brace yourself when you're lapping the track at speed.

There’s a 12.3-inch multimedia touchscreen in the centre, which houses all of the various car settings, including the very detailed N performance driving modes. This is where you can either program the N buttons or dial up the individual settings.

There’s also track-themed graphics that appear on the head-up display, if you really want to do your best Oscar Piastri impression.

That external size translates to a roomy cabin, which also has some flair to the design but thankfully a bit more restrained than the smaller Atto 3 - which is a bit over-the-top in this reviewer’s opinion. 

The element that sticks out immediately is the large central touchscreen which, like other models in the range, can rotate either vertical or horizontal, depending on your preference.

I don’t understand the point of this, because when rotated vertically it impacts your forward vision and can interfere with the air conditioning vents; and I can’t even see it with my polarised sunglasses.

It simply makes more sense horizontally, but I guess all carmakers are looking for catchy gimmicks these days. But while it may seem like a cool party trick it remains somewhat confusing to me, like one more thing to go wrong. But maybe I’m just getting old and grumpy.

What I do like and think is a great idea is double smartphone charging pads in the centre console. And overall the design of the cabin feels well thought out and has plenty of useful storage areas.

The seats are fine, a little flat and the fixed headrests are irritating, but overall they’re soft and supportive enough.

The key in the second row seating is the amount of space, with the extra length of the Sealion 6 compared to its rivals showing up with more knee room in the back for families with growing teenagers or those who need to carry their adult friends.

There’s also a pair of USB ports in the back too, so everyone can keep their electronics charged.

The boot is a good size, measuring 425 litres on paper, and has a nice long and wide floor. But some of that space is thanks to the lack of a spare - so that counts against it in my book.

The cabin is very practical too, despite its sportiness. There’s good storage spaces, including a pair of cupholders and a tray built into the centre console.

There’s also USB-C charging ports in the front and back of the cabin to keep small electric devices charged, as well as a smartphone wireless charging pad.

By relocating the controls usually found on the door (windows, mirrors, unlock/lock buttons), the door pockets have been sculpted out to create more width and space for the front seat occupants.

It’s comfortable and roomy too, especially in the back, where Hyundai has taken advantage of the Ioniq 6’s bespoke electric underpinnings to have a flat floor with good knee and legroom.

The boot measures 371 litres, which is on the smaller size for a mid-size sedan, and well short of the class leaders, like the 524L Toyota Camry.

While it pushes the boundaries in terms of performance, it also stretches the appeal of Hyundai as a brand. Priced from $115,000 plus on-road costs,  it’s the same price as the Ioniq 5 N but that still makes it one of the most expensive Hyundai’s ever sold. Only the $119,750 Ioniq 9 is pricier.

For the asking price, beyond the performance elements, standard equipment includes LED headlights and tail-lights, 20-inch alloy wheels, dual-zone climate control, an eight-speaker Bose premium sound system, a 12.3-inch multimedia touchscreen, wireless Apple CarPlay and Android Auto and Hyundai’s Digital Key2.

There is only a single specification and the only option is the choice to delete the sunroof, free-of-charge (although, given carmakers typically charge extra for a sunroof, it seems a little sneaky to not get any discount for removing it).

However, if you want to make your Ioniq 6 N more special, there is also a carbon package available through the accessories department. It adds an even larger rear wing and unique front splitter and side sills (all in carbon fibre, of course) for an additional $27,000, pushing the price past $142,000 before on-road costs.

While it may be expensive for a Hyundai, in terms of how many dollars for how much performance, it’s arguably one of the better value performance cars on the market. Would be rivals include the $187,900 Mercedes-AMG C63, $156,990 Alfa Romeo Giulia Quadrifoglio and $169,100 BMW M3, although the latter will get a full electric vwersion in its next generation.

While BYD has made its name in Australia as an all-electric brand it has always referred to itself as a 'new energy' company, and the Sealion 6 (and upcoming Shark ute) are why.

That’s because these feature BYD’s new 'Dual-Mode Intelligence' (DMi) powetrain - a hybrid system to you and me.

As mentioned above, the biggest difference between the Dynamic and Premium models is the powertrain, with two reasonably different systems.

The Dynamic is powered by a 78kW/135Nm 1.5-litre four-cylinder petrol engine, paired with a 145kW/300Nm electric motor - making for a combined system output of 160kW/300Nm. Notably, this powertrain only drives the front wheels.

In contrast, the Premium has an all-wheel drive set-up, combining a turbocharged version of the petrol engine (good for 96kW/220Nm) with a pair of electric motors, one on the front axle and one on the rear to produce a combined output of 238kW and 550Nm.

Both models get the same 18.3kWh ‘Blade’ battery, which is BYD’s proprietary technology underpinning all of its models and is attracting attention from other brands.

For reference, the Outlander PHEV has a 20kWh battery, Nissan’s X-Trail e-Power has a 2.1kWh battery, while the more conventional RAV4 Hybrid has just a 6.5Ah battery.

As mentioned earlier, while it may be expensive for a Hyundai, if you want a car capable of making 478kW and 770Nm you’ll typically need to spend a lot more than $115,000. This makes the dual-motor electric powertrain the star of the show in many respects.

Those figures are the maximum performance available when you use 'N Grin Boost', a 10-second burst of ultimate power. The ‘normal’ performance is a still an incredibly impressive 448kW and 740Nm.

These come from a 166kW front motor and 282kW rear motor, to give you all-wheel-drive capabilities.

That’s enough for the Ioniq 6 N to do the 0-100km/h sprint in just 3.2 seconds with N Grin Boost activated (0.2 seconds faster than the Ioniq 5 N). Top speed is limited to 257km/h, which is obviously too much for the road, but Hyundai is pitching this as a track car and in that sense it will struggle to keep up with some supercars at the end of long straights, but that’s probably a minor quibble in the grand scheme of things.

Like most electric cars, the Ioniq 6 N has a single-speed transmission. But like the Ioniq 5 N, Hyundai has developed an artificial ‘manual’ gearbox, which it calls N e-shift. By torque limiting the engine to create a false ‘rev limit’ there are eight virtual gears for you to use via the paddles on the steering wheel.

But this is only part of the story, Hyundai has included a number of N-specific driving settings for the powertrain beyond N Grin Boost and N e-shift. N Torque Distribution has 11 different settings that allows you to adjust the torque split between the front and rear axles up to 95 per cent in one way or the other.

Then there’s N Drift Optimiser, which helps you do big skids, on the safety of a track, of course. Plus N Launch Control to shock your mates with V8s at the drag strip and N Track Manager to keep track of your lap times.

It all sounds very complicated but Hyundai has done a nice job of integrating the systems into the car and making the menu easy to navigate. And because these systems are largely digital, rather than mechanical, it actually helps make the car easier to drive in some regards.

There are multiple modes to drive it in, including electric only, with the Dynamic able to go up to 92km on a single charge, while the Premium manages a claimed 81km.

However, it's important to note these are the NEDC standards and not the more real-world like WLTP,  so you may not achieve those in practice.

The claimed fuel consumption is an impressive 1.1L/100km for the Dynamic and 1.4L/100km for the Premium although again achieving those in the real world will take some effort.

With a 60-litre fuel tank BYD claims the Dynamic has a driving range of just over 1000km, while the Premium can manage around 960km.

It's also worth noting the Sealion 6 comes equipped with vehicle-to-load charging which means you can draw power from the batteries to run small electronic devices if you need to.

It’s a bonus feature that may or may not be of use, but is one of those things that may come in handy one day to get you through a camping trip or a BBQ at the park.

To power this track-focused EV, Hyundai has had to upgrade the 84kWh battery with specialised heating and cooling systems.

Range is rated to 487km, which is good without being great. And, unsurprisingly, if you access all the power available you will end up using the battery quicker, much like you’ll use more fuel if you drive an internal combustion engine hard.

For track use, Hyundai suggests a ‘20-20-20’ cycle of 20 minutes of track driving, 20 minutes of cooling and then 20 minutes of charging to ensure you get maximum out of a track day. Although we were able to do closer to 30 minutes of track driving from a single charge.

To make this possible, there is a special N Battery mode, which is able to maximise track usage by managing the cooling and output depending on the scenario. There are Drag, Sprint and Endurance settings, with Drag making the battery warmer for sudden acceleration, Endurance trying to keep it cooler to extend on-track range and Sprint automatically applying N Grin Shift when needed.

It’s an incredibly complex system but it speaks to the challenges of making an EV capable of the rigours of high-speed driving consistently.

In terms of charging, the key detail to know is, with the maximum charger, you can go from 10 to 80 per cent charge in as little as 18 minutes, according to Hyundai’s claim, and is compatible with either 400V or 800V charging infrastructure.

We drove the Sealion 6 Dynamic and despite having the less powerful powertrain it feels good on the road. The DMi system offers good performance, with quiet acceleration off the mark and a good integration between the petrol engine and electric motors. We haven’t driven the Premium yet, so we can’t make any comment on how different it feels.

It’s hard to make a definitive call on the Sealion PHEV powertrain because, like every plug-in hybrid, its greatest strength relies on how the owner operates it.

If you don’t charge the battery every day or so, you’ll just end up lugging around a battery and electric motor for little benefit. However, if you do keep the battery topped up, you can do most of your urban commuting without needing to turn the petrol engine on, which should result in some very low fuel consumption figures.

The company clearly knows this, which is why BYD Australia is offering a complimentary home charger to the first 3000 customers who order a Sealion 6.

Not only will that encourage sales but it will also help owners become evangelists for PHEVs in the future, because they’ll have the best possible experience.

So, a large part of its strength or weakness rests on the owner’s behaviour and that’s something we can’t assess.

As for the rest of the driving experience, the ride comfort is fine. It can’t match the class-leaders for compliance or dynamics, but the Sealion feels pleasant to drive around the urban environment and on the freeway at speed.

Biggest criticism is the steering is very, very light. While that makes parking easier, it feels so light you get very little feedback from the front wheels so it can feel vague at times.

Overall the driving experience is best described as fine. It doesn’t have any major vices but neither does it set any new benchmarks. 

To put it bluntly, the Ioniq 6 N is sickeningly fast. Literally, it can make you feel car sick from the passenger seat if the driver unleashes the power a little too frequently, which isn’t hard because the Ioniq 6 N offers near-instant torque.

The dual motors mean this swooping sedan launches out of corners with a ferocity usually reserved for supercars - it is that quick under hard acceleration. But pure acceleration is only part of the story when it comes to a proper performance car.

As impressive as the Ioniq 5 N is, it was always going to be handicapped by its taller SUV body, meaning the handling was somewhat dulled by its size and shape. The lower, more aerodynamic Ioniq 6 N is therefore noticeably more dynamic and responsive to drive.

The suspension and steering tune isn’t specifically tuned for Australian conditions, instead it’s based on the globally developed setup designed for the Ioniq 5 N, which Hyundai Australia did have input into.

Despite not being tuned specifically for Australia it still rides with impressive compliance for such a performance-orientated electric car. Even on the choppier back roads we tested it on, it feels controlled and compliant while still being responsive, without feeling uncompromising or uncomfortable.

But to really experience the true performance potential of the Ioniq 6 N, you need to hit the racetrack. Thankfully, Hyundai Australia allowed us to test it to its limits at Sydney Motorsport Park.

Free from speed limits the immense power can be unleashed and to make the experience even better you can use the N e-shift and the N Active Sound+ - three separate artificial soundtracks that are designed to mimic engine noise.

There is one that can broadly be described as ‘futuristic’ and another that is meant to sound ‘electric’ but neither are good enough to bother with. Instead, if you stick to the one that sounds like Hyundai’s petrol engine you’ll enjoy it.

While it is clearly an artificial sound, and there will be haters who just don’t like it (and they can leave it switched off), Hyundai has done a brilliant job mimicking the sounds of a proper petrol performance car. So much so that when you lift off the accelerator, you actually hear a ‘snap, crackle, pop’ from the rear of the car, as if there is an actual exhaust making the sound.

What the noise does do is really help you with a sense of speed, as does the N e-shift, not only helping you drive faster but also just making the experience more fun.

For the serious track-day drivers the amount of adjustability in the Ioniq 6 N is brilliant. In particular the N Torque Distribution system, which allows you to shift the drive split front-to-rear on the move. Experimenting with this system, there is a clear difference between the handling not only as you switch between modes, but if you’re really, really serious, you can even adjust it during your on-track run. As the tyres get hotter, shifting more drive rearwards helps the car rotate better and punch out of the corners easier.

However, while Hyundai may have designed it as a track-capable, ‘Corner Rascal’, as they like to say, the reality is, most of the time you’ll be driving, you won’t be on a racetrack.

Even so, N Road Sense is a special setting that is able to recognise a double curve road sign and urges the driver to activate N mode and have more fun, so it’s always looking to encourage you to have a good time.

But what about when you’re not driving fast? How does the Ioniq 6 N stack up as a daily drive? Well, one of the elements of  performance EVs that I personally appreciate, is how quiet and relaxed they are when you don’t need to go fast. Unlike an internal combustion performance engine, which can feel like a caged animal at suburban speeds, an EV with 448kW is as smooth and quiet as an EV with 148kW.

It means it plays both its roles - weekday commuter transport and weekend fun machine - with equal ability.

The Ioniq 6 N gets a comprehensive list of driver assistance systems, under the umbrella of Hyundai SmartSense.

Among the safety gear included is forward collision assistance, blind spot collision avoidance and the brand’s mild-autonomous functionality, 'Highway Drive Assist 2', which can both maintain speed and lane centring under certain conditions.

The car is also equipped with Hyundai Bluelink, the brand’s connected car service, which includes an ‘SOS’ function that can call the emergency services if you’re in an accident where the airbags deploy.

While there is no questioning the amount of technology Hyundai has put in the car, like so many other models in the range, the systems need more fine tuning to make them class-leading. There are still too many ‘beeps and bongs’ from the Ioniq 6 N, to the point of becoming distracting. While the lane keeping assist can be too uneven at times, needing more work to get it better calibrated for smoother driving.

The entire Ioniq 6 range has a five-star ANCAP safety rating, based on a 2023 test, and given there are no major structural changes (beyond some body stiffening), there is no reason to think the N model would be any worse.

BYD is a small company but has partnered with mycar service centres to make maintaining your Sealion 6 easier. The Sealion is covered by BYD's six-year/150,000km warranty as well as its 10-year capped price servicing plan.

Service intervals are every 12 months/20,000km and prices range from $265 up to $1184 for the major eight year/160,000km tune up. Over the first five years, in keeping with most of its rivals, you’ll be paying $1648.

As I’ve written in previous BYD reviews, the biggest question mark hanging over the brand is arguably its long-term prospects. Quite simply, the brand is still too new to know how well it will perform on the used car market.

We also can’t tell you how it will hold up from a reliability point-of-view. We’re not suggesting there’s any doubt over its quality, but each car brand must prove itself reliable and dependable over time, and BYD hasn’t had that time yet.

Hyundai covers the Ioniq 6 N with its usual seven year/unlimited kilometre warranty, with any non-competitive racetrack usage also covered. So you can do a track day, including the official N Australia organised ones, with peace of mind.

This applies even if you upgrade your tyres and brake pads in search of faster lap times, as long as you don’t enter into a competition, Hyundai will look after most mechanical on-track problems.

Service intervals are every two years or 30,000km, whichever comes first. Hyundai offers a ‘lifetime’ servicing plan that covers the first four years, but with only two services required - one for $645 and the second for $667.

As one of the best-selling brands in the country, Hyundai has an expansive nationwide dealership network, including extensive rural coverage and service centres trained to deal with EVs.