Hyundai Ioniq 6 vs BYD Sealion 8

What's the difference?

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.

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 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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.