Mercedes-Benz X250 vs BYD Sealion 8

What's the difference?

The X was an opportunistic shot at a market segment new to Benz. With even apprentices able to afford to buy a well-specced Hilux, it's become harder to separate the foreman from the kids. I, like Mercedes, thought this would be the boss's car. Mercedes saw the gap and went for it, thinking it could grab sales from top end utes from VW, Toyota and Ford, while maybe saving a few folks from buying a RAM or an F150.

The problem is, the target market knows its utes. And in a rough-and-tumble workplace, the perception is that if you've spent up big on this Merc, you've actually just paid too much for a Nissan Navara. Still, like those flawed movies I enjoy, the X-Class is a fine thing - and I don't blame Mercedes for trying. It just costs too much, and yet isn't Mercedes enough to justify that price.

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.

Despite being a Japanese ute in drag, the X-Class isn't immediately rumbled as resembling a Nissan, which certainly should count in its favour. Everyone who asked about it had little idea it wasn't a Daimler from the ground up, until you pointed out various details. Up here in the higher reaches, it's a really quality-looking thing, with beautiful paint and enough differentiation to make it look like a Merc. The headlights do seem a tad small next to the rest of the Mercedes range, but the whopping great three-pointed star in the grille leaves no one in doubt. 

It's fairly tasteful in silver, too, and with a few carefully chosen options it looks pretty tough.

Once you're inside you see where it starts to get confused about itself. The hard, scratchy plastic dash pokes out from behind a huge slab of metallic trim. The centre console is clearly a brother from another mother, as is the overall dash layout. The cabin lacks the thoughtfulness and quality of a Mercedes design - you can't just slap on those signature air vents and expect to get away with it. Every piece that comes from Mercedes appears glued on, and it's jarring. 

This might have been less of an issue if the car was significantly cheaper and not likely to be purchased by people who are familiar with the brand.

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.

I really can't imagine how anyone signed off on the most annoying features of the X. Front-seat passengers get a solitary, shallow cupholder (the second one is unusable), and big door bins that could hold a bottle if you didn't mind it getting smashed from sliding around (they're unlined), and nowhere to put your phone. Like, nowhere, except maybe the glove box. Even the centre console bin is shallow and not much good for anything, apart from as an armrest.

The front seats are reasonably comfortable but the rears are way too high (in the name of a better view) and rammed hard against the rear bulkhead. The rear doors are also pretty narrow, so entry and egress can be a bit of a challenge if you're large or toddler small. Once you're in the seats, legroom is limited and headroom marginal. At least you get air-conditioning vents, but you don't get an armrest in the rear. On a nearly $80,000 ute. Even the dark-ages Colorado has one of those.

Anyway, that's enough said about the interior flaws.

The tray is a big boy, but it's worth knowing that the roller cover does rob a bit of space, as it does on any ute. The optional tray liner looks good and with Mercedes-Benz stamped in it, reminds you again what you've got. All told, it's 1581mm long, 1560mm wide (1215mm between the wheelarches) and you can load up nearly a tonne of people and things into the X350. You can also tow a massive 3500kg braked and still be able to carry a payload of 490kg. Gross vehicle mass is 3250kg (tare is 2190kg).

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 X350d has something very Mercedes about it - the engine and transmission package. With 3.5-litres of turbo-diesel V6, you get 190kW at 3400rpm and a thumping 550Nm between 1400 and 3200rpm. These kind of figures at least put it up there with the brawnier VW Amarok.

Feeding the power to all four wheels is Mercedes' own seven-speed automatic. A centre diff apportions power front to rear and you have a choice of three modes - automatic, high range and low-range.

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 X350d did pretty well in the week I had it - the official figure of 8.8L/100km was never going to happen but with a long motorway run to the Blue Mountains and the rest bashing about town, the 10.5L/100km I did achieve without trying was not bad at all. The 80-litre tank should give you a decent range of 750km, or thereabouts.

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.

One of the weirder things to make it into the X-Class is the world's second most irritating column stalk, which is asked to pack in indicators, headlights and wipers. Thankfully, the world's most irritating column stalk, the Mercedes automatic shifter, wasn't inflicted on the X-Class. But the obvious problem is the key, which clearly isn't a Mercedes unit - even the star is ill-fitting and will probably fall off after a while. This is not a premium experience.

Thankfully, the big turbo-diesel wipes away a lot of the complaints about this car not being Mercedes enough. Brawny and super quiet (twin balance shafts will do that), the X is a very easy car to live with. While not especially lively, it's easygoing in the city and very refined.

On the open road it cruises almost silently and the ride is way above what you might expect from an unloaded tradie-mobile. It doesn't feel as high as some utes, which makes it feel a bit more car-like, and will no doubt appeal to some who might have to swap in and out of a traditional SUV and into the X, for whatever reason.

It is by far the most civilised ute I've ever driven and was worlds away from the Colorado I drove last week, to the point where I could almost - almost - see a justification for the unbelievably hefty price tag.

Credit for the refined ride and handling goes to the coil-spring rear end, much maligned in some quarters. While that style of suspension is not the ultimate in load-lugging, it's way more comfortable for passengers and, given the likely buyer profile, probably more agreeable than a cart-sprung rear-end.

I would cheerfully drive long distances in the X and it feels like it could go anywhere.

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.

Mercedes offers a three year/200,000km warranty for the X, which isn't too bad. It also throws in roadside assist for the duration. Also worthy are the 12 month/20,000km service intervals. 

A basic capped-price service scheme will hit you for $1950 (pre-paid) or $2,555 if you pay when you front up for each of the three services covered. The servicing isn't super-cheap, as you can see, but at least you know what you're up for.

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.