Lexus IS vs Mercedes-Benz EQS

What's the difference?

Smooth, cosy, quiet, the IS looks and feels better than ever, but without a doubt this hybrid version is a car best suited to cruising the dense metropolis of Chiba at midnight more than it is carving up a bunch of S-bends in the Australian countryside on the weekend.

While that might still limit its appeal for fans of German sports luxury sedans and place it further from the original IS’s ambitions, it does offer an intriguing efficiency and luxury focused alternative, without the compromises brought by rivals with more sporting intent. In a way then, the IS 300h perhaps inadvertently best embodies what Lexus is as a brand.

It’s unquestionably fast, certainly luxurious, but I’ll be honest, I don’t think the EQS is going to be for everyone. The styling will be challenging for some and the glittery interior tech offering might be a bit much, even for the more rusted-on Benz traditionalists.

Then again, shouldn't an electrified flagship be all about challenging the status quo, trying new ideas, and bringing new fans to the brand? If anything, I think that might be what the EQS does best.

Look closely and quite a lot has changed. This is really a story of doing a facelift right. Lexus has kept all the great-looking bits of the car that launched in 2013, like its striking side profile and angular accents, while dumping most of its least popular elements like the spidery front light-clusters and busy front splitter, in favour of something more refined and conservative.

It even adds some new flair in the rear three-quarter, with dramatic LED light-clusters working their way into a trendy highlight strip across the boot lid.

These changes all add up for a much tougher, sportier, and nuanced design compared to the outgoing car. One that manages to make an eight-year old design look as contemporary as ever.

I even liked our test car in its plain black shade, although I'm less sure about those conservative-to-a-fault, almost Camry-esque alloy wheels.

On the inside, sadly not a whole lot has changed. The busy design looked dated when this generation of IS launched in 2013, and it still looks dated now.

The visual assault of buttons, toggles, displays, textures, and trims is a lot to take in, and makes the cabin feel smaller than it is.

It probably didn’t help the sensory overload of this car’s interior as I hopped out of the stripped-back interior in the Tesla Model 3 I had the week before.

My less-than-impressed brother, a student of design, described the IS’s interior best when he told me “It’s a bit maximalist, don’t you think?”

If nothing else, at least Lexus hasn’t blatantly imitated anyone else when it comes to its interior, but the brand remains firm on dorky design items like the laptop touchpad, redundant drive-select dial, and odd vacant panels under the climate unit which do it no favours.

A welcome upgrade for the 2021 model year is the new media screen, a highlight piece perched atop the dash. It’s bright, has excellent contrast, and doesn’t seem to fall victim to glare.

The Apple CarPlay support I used was seamless and sharp and made the most of the available real-estate in its widescreen layout.

I somehow didn’t mind that the instrument cluster in this base car is analog. It almost suits the IS’s character better than a digital set-up would. Also offered is a small information display between the dials which I used for monitoring the hybrid drive.

A final note on the IS’s design. The fit and finish is quality, inside and out. It leaves you with an impression that this is an immaculately built vehicle, one that should be a must for all luxury cars, and always a strong point for Lexus.

We’re going to start with design, because from the outset it is a topic which simply must be addressed.

Mercedes has flipped the script when it comes to its next-generation design language worn by its dedicated range of ‘EQ’ electric cars. It follows a trend we’re seeing across the industry of larger, more amorphous vehicles which need the space to accommodate batteries, but also the aerodynamic traits to extend driving range and keep energy efficiency as high as possible.

The issue when it comes to the EQS is it essentially puts the iconic S-Class shape, refined over generations, in the bin, and replaces it with something a bit more challenging to the eye.

Gone are the angles, louvres, and deeply three-dimensional grilles, replaced by sleek rounded edges, wheels which reach to the very edges of the chassis, a blank, almost plasticky grille and a more liftback-like profile than one of a traditional sedan.

You’d better get used to it, too, because the smaller EQE is near identical in shape, a trend which will no doubt continue across other EQ models.

It’s the finer details that add character, particularly for the 53 with its AMG-leanings. The lack of shapeliness down the side makes the massive 22-inch wheels stand out more, and the rear three-quarter might be this car’s best angle, with a colour-matching spoiler flicking up off the small bootlid, and delicate badgework illustrating this car’s place in the world. Our car, which appeared in a silver shade timeless on Mercedes-Benz models, made the black AMG highlights on the front and rear bumpers shine, and some of the usual Benz shape is claimed back through the EQS’s LED light profile, both at the front and rear.

There’s no doubt it’s a step into the future, and an overall shape which is a marriage of both form and function. While looks are always subjective, I still think it may be a hard sell, even to some of the most committed fans of Mercedes design.

Well, the IS is a sedan, so it doesn’t quite have that high-riding appeal of an SUV, and for this update it has even leaned further into its low-slung proportions with a roofline that descends a further 15mm and a boot lid which is 31mm lower overall.

As with the previous car, the interior is quite closed-in thanks to that busy dash design and large centre console. Rather than feeling claustrophobic though, it is best described as cosy, with lots of plush finishes throughout the doors and centre stack befitting a luxury nameplate.

Adjustability is great for the front two occupants and there are two large bottle holders between the seats, a large but shallow console box under the armrest, bottle holders with adjoining bins in the doors, and a smallish glove box.

That’s about where storage ends though, with no extra trays or bins in front of the oddly placed shifter, just an awkwardly finished plastic panel where it feels like a little tray or storage cutaway should be.

The touchpad for operating the media screen joins an unnecessary drive-select cluster in eating up centre console space where there could be more storage.

The rear seat is quite limited on space despite being lavishly trimmed. I fit behind my own (182cm/6'0") driving position with little knee or headroom to spare.

Again, it’s cosy and very comfortable, but if you're taller or wider than me you may run into issues.

The centre rear seat is all but useless for adults, with the IS’s rear-drive architecture necessitating a huge transmission tunnel that almost comes as high as the seat base itself.

Storage is limited to pockets on the back of the front seats, small bins in the doors that double as handholds, and a drop-down armrest with two bottle holders.

There are no power outlets for rear passengers, but there are dual adjustable air vents.

Boot space is 450L which is a little small for the class. It’s impressive the hybrid only managed to lose 30 litres compared to petrol-only IS variants, though, so best to count your blessings.

The largest CarsGuide travel case easily fit in the wide but short available space.

The EQS is enormous, so it’s a good thing there’s huge amounts of interior space, even for what is ostensibly an S-Class, and with its bespoke electrified underpinnings, it also scores the kinds of innovations we like to see from electric cars.

These include things like a huge cutaway under the floating dash for extra storage, which the brand has seen fit to add elastic tie-downs so your objects don’t go flying in corners!

Storage up front is otherwise excellent with decent bins in the doors with height-limited sections for bottles, a flip open tray which houses the wireless charger and a set of fold-away bottle holders, and split-opening armrest console box which is deep and features yet another set of USB-C outlets.

Adjustability is great for front passengers, but ergonomically I found something a little weird about the digital dash. For me to rest my arms and hold the wheel, I had to set it so low the top of the wheel obscured the instruments, and if I set it high enough to see the full cluster, to comfortably hold the wheel my elbows would need to float above the armrests. Weird.

It doesn’t end there for the entirely touch-based controls either. While the (admittedly very cool-looking) wheel is packed full of buttons and touch sliders, they require near-surgical precision to operate with your thumbs, distracting while you’re driving, and the enormous centre screen’s main drawback is the fact CarPlay, for example, was not designed for the buttons and functions on the far left to be a metre away from where the driver’s hand is. Again, it’s distracting to have to lean out of your seat to hit the ‘back’ button on most context menus.

I would like to tell you at this point the Mercedes-Benz menus are mercifully simple to aid you with such an overwhelming system, but this isn’t true either. For some reason, there’s a ‘vehicle settings’ menu accessed easily through the main panel, or another menu with a separate set of key functions activated by a car-shaped shortcut button on the floating console. Why? Why aren’t these menus the same? I discovered this in my attempts to use the ‘raise vehicle’ function when faced with a steep driveway. You’re going to need to use this function often in a car measuring over 5.2 metres long, so hiding it in a confusing menu is an interesting choice.

The back seat is where the EQS should shine, and in terms of space it’s stellar. I can barely touch the seat in front of me when set to my own (182cm tall) driving position. It comes with some soft pillows which attach to the headrests, the sunroof extends back there nicely while not impeding on the great headroom, and the lavish trims all continue into the doors and seat bases, too.

The drop-down armrest has a trick pop-out bottle holder in it, and there are a further two on the doors. Amenity-wise rear passengers score four adjustable air vents with two climate zones adjusted via their own touch-panel, but I was interested to see there was a lack of screens back there.

This is particularly notable as most S-Classes are bought to be driven in rather than to drive, and the screens are so much in the front, I was expecting a matching offering for rear travellers. Not so.

You also can’t adjust the rear seats at all, and unlike some EVs coming out in this space, there’s no recliner mode for the full business-class experience.

The boot is much larger than in the smaller EQE, with the EQS making use of its extended dimensions nicely. The floor is fully flat, and has a secret compartment underneath for the storage of both your included Type 2 to Type 2 public AC charging cable, and Type 2 to wall-socket converter for garage charging.

With a total space of 580 litres, the EQS comfortably consumed our entire CarsGuide luggage set with space to spare.

At a whopping $328,400 before you start ticking options boxes or apply the necessary on-road costs, the EQS 53 is at the pointy end of the price scale, even for an electric car.

Dig a little deeper though, and there are some surprises. For example; this top-spec EQS still manages to be more affordable than the top-spec combustion S-Class ($335,100) and when compared to its rival from Porsche, the Taycan Turbo S ($351,000), it comes out with a cost-advantage.

It is significantly more expensive than BMW’s electric flagship, the upcoming i7 sedan, which starts at $297,900 before on-roads for the xDrive60.

Still, falling between BMW’s core EV offering and the Porsche Taycan is a fitting sweet-spot for our Mercedes EQS.

Equipment is out-of-this world, with the EQS not only having ridiculous performance figures we’ll talk about later, but also standard four-wheel steer, all-wheel drive, adaptive suspension, full leather interior trim with multi-way adjust for the front seats, complete with heating, cooling, and several message programs.

It also has the (again, completely over-the-top) 1.4-meter long MBUX ‘Hyperscreen’, which is made up of two large screens for the instrument cluster and passenger touchscreen, as well as an enormous centre panel for the climate and multimedia functions, wireless Apple CarPlay and Android Auto connectivity with matching wireless phone charging bay, augmented reality sat-nav, a panoramic sunroof, LED headlights, LED interior lights with selectable RGB settings, and an auto tailgate.

Enough stuff for you? Wait! Says Mercedes, there’s more! The Dynamic Plus package ($7690) boosts performance even more and adds an extended cooling system and launch mode, an aesthetic Night Package ($3990) which adds mainly black and chrome trim pieces as well as 22-inch wheels, ceramic composite brake package ($9990), augmented reality head-up system ($2690) and a wall box home charger ($1450).

Plenty for buyers to work with then. For now though, they’ll only be able to choose the top-spec AMG-tinged 53 version, as lower grades are yet to arrive in Australia. It will be the same for the smaller but near-identically specified EQE 53 when it arrives in Australia, so the message is pay big or go home to get on the latest EQ tech early.

The IS 300h does stand out from the luxury sedan crowd by offering a hybrid drivetrain at a reasonable price. Some rivals offer plug-in options further up the price scale cementing them as a niche option, but the beauty of this Lexus is its very mild $3000 price jump over the base petrol car.

The base car’s 2.0-litre turbo is dumped in favour of a 2.5-litre non-turbo Atkinson-cycle four-cylinder hybrid set-up similar to the one proving popular in the Toyota Camry and RAV4.

The petrol engine produces 133kW/221Nm on its own, and the electric motor produces 105kW/300Nm. Toyota says the “combined system output” of this is 164kW.

Either way, that's less than the base 2.0 turbo. The 300h also swaps out an eight-speed torque converter automatic in favour of a continuously variable transmission. Rare in a rear-wheel drive car.

In the electric era, do performance figures matter? AMG would argue a resounding ‘yes’ although I would argue the art for premium automakers like Mercedes is now in producing suspension setups that can handle the weight of batteries.

Regardless, the EQS has a dual-motor setup, capable of providing a whopping 484kW/950Nm in its standard form, or an even more incredible 560kW/1020Nm with the Dynamic Plus package. Look, you’re spending over $328,000 already, what’s an extra $8k or so to put pretty much any other four-wheeled object in your rear-vision mirror? With the Dynamic Package, a sprint time of 3.4 seconds is… brutal.

The four-wheel drive system is necessary to keep all that power under control. While some enthusiasts may be turned-off by the four-wheel steer function, I’d read on to the driving section to see why it’s not only worth having (try turning a 5.2-meter long sedan around without it) but also not as intrusive as you think it’s going to be in the corners.

As you might hope this hybrid IS has an astoundingly low official/combined fuel consumption rating of 5.1L/100km.

I was pleased to find that after a week of mainly urban driving conditions, our IS was returning a figure of 6.9L/100km. Not bad at all, especially for a class where fuel consumption can get a little out of hand with turbocharged engines or V6s.

Of course, using the hybrid system to your advantage over the long term will get this number much lower, as I discovered on my long-term test of the Toyota Corolla hybrid which essentially uses a smaller version of the same system.

Certainly, if fuel consumption is a high concern, you’re better off with this car than the top-spec V6 (IS 350) which will easily see consumption enter double digits.

Lexus recommends a minimum RON rating of 95 for the IS 300h, and the fuel tank is 66 litres regardless of variant, giving the hybrid an impressive theoretical range of around 1000km.

Even at the official energy consumption of 23kWh/100km, the EQS’ drivetrain is essentially the electric equivalent of wielding a massive V8 under the hood. It’s not by any measure impressive, but then, with 107.8kWh of lithium batteries under the floor, it’s perhaps impressive it’s not worse than an Audi e-tron, particularly since the EQS weighs in at nearly three tonnes.

The battery is one of the largest on the market in Australia, offering the EQS a driving range of 585km on the WLTP cycle. Very impressive.

On the charging front, the EQS can charge at up to 200kW on DC thanks to an advanced cooling system, and on AC charges at 11kW in its stock form or 22kW with an optional $2490 upgrade. Again, at $328k, why wouldn’t you want the best charging system you can get for so little extra?

You can also package in a Mercedes-Benz branded wallbox for your home garage, valued at $1450 before installation costs.

To give you an idea of charging times: Expect a little over two hours (from 10 per cent) on a common 50kW DC public charger, nearly ten hours from an 11kW AC public charger, and a number not even worth mentioning from a home wall socket.

There is no doubt the IS 300h is capable. You can feel it through the car’s solid rear-drive underpinnings, silky smooth steering, and reactive chassis.

What this car doesn’t offer is excitement in quite the same sense as many of its rivals. That’s down to this hybrid’s drivetrain. It just doesn’t have that powerful follow-through in the same way turbocharged BMWs or Audis or Mercedes do.

If it’s that 'sports luxury' experience you’re seeking better off looking to the base 2.0-litre turbo or the V6 and their eight-speed automatics.

The 300h does offer something a bit different. The gentle refined efficiency of Toyota’s signature hybrid system in a luxury rear-drive package that’s smaller than this car’s ES bigger brother.

While it may feel capable thanks to the lighter suspension components and altered track that the brand has committed to for this update, the hybrid drive matches this car’s softer character brought about by its gentle suspension tune and light steering.

This is an easy car to drive around a city, it filters out bumps nicely, while offering near silence in the cabin and breezy steering for every day scenarios like manoeuvring in tight parking lots.

The CVT auto and instantaneous torque available from the electric motor make it best at traffic speeds, being both reactive and predictable, with silent acceleration when inching forward at the lights or cruising along at 50km/h.

As you might expect though, the wheezy Atkinson cycle engine and CVT conspire for a noisy and less than engaging experience under heavy acceleration.

It’s not as though you’re rewarded with particular vigour either, with this combination being a bit sluggish when a lot is asked of it.

It loses its reactivity and refinement at higher speeds or in the corners on country roads as the transmission elastically tries to keep up with the demands of the driver.

Still, few luxury sedans are quite as purpose-built for the toils of a city, and if you want to get drawn into this car’s hybrid drive antics, it’s easy to make a game out of saving fuel by trying to rely on its low-speed electric motor capability.

Really then, it leans into its urban luxury appeal. A luxury sedan for the streets of Tokyo. An ideal car in this class for the urban environment.

If you don’t care for the thrill of a turbocharger or frequently seek to explore the twists of your nearest B-road, you could do worse than the comfort and ambiance the 300h offers.

The EQS is quite surreal to drive, and you’ll notice a whole bunch of odd things first.

Immediately the driving position will be surprising. It’s nothing like what a traditional sedan feels like. This is because you sit high in the EQS. This helps facilitate extra under-floor space for the batteries, but the way Benz puts it, this driving position is deliberately SUV-like to grant buyers the more desirable view of the road which they now (apparently) seek.

It has some oddities, as mentioned earlier, with the fixed digital instrument cluster, and the way the wheel can block it depending on your height, but on the whole I found visibility in the EQS to be pretty good, despite limitations out the distant rear window.

Sound-wise AMG has created a bespoke soundscape for its electric models, two soundscapes, in fact. One sounds like a facsimile of a distant, digitised, V8 (weird) while the other is a bit more sci-fi. I can’t decide which one I really like, but props to the brand for thinking of individual sounds for things like accelerating, regenerative braking, as well as turning the car off and on. There’s even a humming tone for when the car is idling. 

AMG says “it doesn’t work without sound” and I suppose it does add some sort of feedback to the experience which would otherwise be missing. I’d rather have it than not I suppose is the take-away here.

The acceleration is completely over-the-top in Sport or Sport+, allowing you to move such a large vehicle forward in an almost comically quick fashion. It has the sudden urge of a Tesla, but with an element of grace that follows courtesy of the adaptive suspension which, not only settles the ride, but keeps the car comfortable.

It is the suspension though which sets cars like the EQS (and even rivals from BMW) apart from the likes of Tesla. The ride in the EQS is superb, befitting the heir apparent to the S-Class throne. It’s hard to find a ride so void of issues, particularly in the everyday Comfort drive-mode. It’s not just the fact I can’t complain about brutality from this car’s oversized 22-inch wheels, but also there has clearly been delicate work conducted to control the rebound, body-roll, and jiggle which can occur as a result of moving around a near-three-tonne chunk of aluminium, steel, lithium and leather at enthusiastic speeds.

This settled ride combines gloriously with the four-wheel steer system to make the EQS a keen corner carver, despite gravity constantly working against it.

I was surprised to find the four-wheel steer system to be pretty much identical in feel to the system also employed in the EQE and new C43, in that it is unobtrusive to the overall feel of the car, only helping to add a little extra turn-in to the corners when need be.

In a vehicle as long as the EQS it’s a bit more noticeable, and requires a moment of brain-adjustment, as the car (bizarrely) goes exactly where you point it, requiring no over- or under-adjustments, the grip from the enormously capable four-wheel drive system refusing to let any shift under sensible driving conditions. 

So, it’s comfortable enough to be an S-Class, fast enough to be an AMG, but I must say there is something a bit clinical about how it attacks the road. Missing some of theAMG drama we’ve become so used to from the brand’s combustion range, perhaps?

The S-Class has always been a safety leader, and it appears the EQS is no different.

On the active front expect Autobahn-speed auto emergency braking with pedestrian and cyclist detection, lane departure warning with lane keep assist, blind spot monitoring with rear cross traffic alert, traffic sign recognition and driver monitoring.

The Mercedes semi-autonomous adaptive cruise control suite is just as good (perhaps better in some areas like distance control) as the stuff from Tesla in my experience, and this car also had a notably comprehensive 360-degree parking camera which is brilliant enough to show you the top-down and full rear view cameras all in one screen.

The EQS is yet to be officially rated by our local crash authority, ANCAP, but it received a maximum five-star Euro NCAP safety rating in 2021.

Lexus gets slightly ahead of the luxury pack with an extra year of warranty. While BMW and Audi still sit on three, Lexus offers four, but it is limited to 100,000km and is still outdone by Mercedes-Benz and Korean newcomer, Genesis, offering five-year/unlimited kilometre promises.

The IS has capped price servicing fixed at $495 for the first three years of ownership with roadside assist, and the brand will even pick up and drop off your car, or offer a free loan car during every 12 month or 15,000km service.

It’s worth noting that German rivals offer pre-paid service packages out to five years, and Genesis is trying to make a splash with free servicing.

Lexus does offer a luxury ownership program dubbed ‘Encore’ which includes invites to experiences and certain partnerships with restaurants and the like to keep potential owners enticed.

Like many electric cars, the warranty on the EQS is twofold. Firstly, there is the whole vehicle warranty, which from Mercedes-Benz is five years and unlimited kilometres, but the high-voltage battery is covered by a separate, and quite healthy, ten-year, 250,000km promise.

Benz throws in a three-year subscription to ChargeFox, offering owners free charging for the duration (to give you an idea, it cost me about $30 to charge the EQS to nearly full from 20 or so per cent).

Service intervals are surprisingly standard, at 12 months and 15,000km, and the EQS’ pre-paid service program is $1750 for three years, $2750 for four years, or $3250 for five-years, working out to about $650 a year. Far from the cheapest we’ve seen for an EV, but chump change for owners considering the up-front cost of this vehicle.