Lexus LM vs Mercedes-Benz S-Class

What's the difference?

The Lexus LM is going to be a niche model. This was not designed to appeal to people that may have bought a Toyota Tarago back in the day, or even a Kia Carnival now.

It has a specific purpose for ferrying people around in absolute comfort and at that, it succeeds in a big way.

It’s just a bonus that it’s great to drive.

Welcome to the automotive equivalent of a business class airline suite.

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

Mercedes-Benz set out to restore the S-Class' place amongst the greatest sedans in the world.

In the heavily-optioned, near-$250K-plus S450 as well as the extended S450L at $300K as tested (the sweet spot of the range for now), we reckon the Germans have succeeded, pushing safety, comfort and technology boundaries, in a package that is true to the heritage of the series.

Tax-fuelled sky-high prices will certainly keep the S-Class niche in Australia, but the car is more than good enough to dominate its tiny corner of the upper-large luxury car sphere.

The best new car in the world? We reckon it's highly likely. Mission accomplished, Mercedes.

Look, people movers are not considered the sexiest of automotive body styles, but that’s changing.

The Kia Carnival and Hyundai Staria are examples of good MPV design.

And the Lexus LM steps it up again. 

It is based on Toyota’s TNGA-K architecture that underpins a bunch of Toyota and Lexus models, including the Lexus RX, and it measures a whopping 5.1 metres long and has a three-metre wheelbase.

It shares its underpinnings with the latest generation Japanese-market Toyota Alphard, which is a cult hit in Australia among the grey import set.

The front-end design is bold, with the latest take on Lexus’ big ‘spindle grille’, pinched slimline headlights and a stubby nose. 

I am a big fan of this design. It is far more than a box on wheels and it has quite a bit of presence. 

The interior design up front is modern Lexus, with a few familiar Toyota touches, and while it’s not exactly minimal, it’s still visually appealing.

Most Mercedes models have followed the Russian Doll-style cookie-cutter styling theme, and the heavy family look continues with the W223.

Still, the flush door handles do add a touch of Tesla-esque modernity, while the elegant silhouette and clean lines are in keeping with the luxury aspirations. Larger in every dimension compared to the old W222, the S450 is some 71mm-longer in wheelbase (3106mm) than before while the LWB's has stretched out by 51mm (3216mm), benefiting proportions as well as interior packaging.

AMG-branded wheels look sporty but – in the S450 at least – they're perhaps a tad too gangster. A set of flush alloys would give it a more-modern and techier appearance, in our opinion.

Overall, however, the S-Class ‘7' possesses the prerequisite richness of design. It isn't as bold and mould-breaking as models like the W116 were back in their day, but the styling is still a success.

By the way, the latest S-Class is the first Mercedes to employ the MRA2 longitudinal platform, which is rich in lightweight steels (50 per cent aluminium), is correspondingly stronger than before but also 60kg lighter.

With a drag co-efficiency rating as low as 0.22Cd on some overseas grades, the W223 is one of the most aerodynamic production vehicles in history.

While most of the fun happens in the second row of the Lexus LM, there is a lot to like in the front compartment.

The dash is dominated by a large touchscreen that houses Lexus’ latest multimedia setup. The logical menu and uncomplicated sub-menus ensure this is an easy system to navigate. Speaking of, the in-built sat-nav is one of the better systems I have experienced. 

Comfort isn’t just the domain of the second row - the driver’s seat is very supportive and comfortable, with power adjustment.

There’s plenty of glass including a smaller front quarter window that helps eliminate front blind spots, so forward visibility is exceptional. Rearward visibility is aided by the digital rear-view mirror that is designed to ensure privacy for second and third-row occupants. You don’t want the chauffeur spying on you while you’re sleeping, do you?

The other big tick for me is the driving position. Other people movers, namely the Hyundai Staria and Mercedes-Benz EQV, have very low window lines and it leaves you with a feeling of sitting on the car, rather than in it. I am sure it helps with extra light and it probably makes it easier for kids to see out of, but from a driving perspective, I find it a little disconcerting.

But the LM has flipped that. The front compartment is designed in such a way that it feels like a cockpit that you’re ensconced in. This helps the driver feel more connected with the car, and in the LM it feels like you’re sitting in the driver’s seat of a sporty sedan, not a five-metre bus. Very well done, Lexus.

And now to the main event - the second row.

Where to begin. Let’s start with space. Because there is so much of it. Unsurprisingly given the seating layout, there is an unending amount of head, leg, knee, bum, shoulder and whatever-else room. I can’t imagine anyone complaining about space back there.

Also, getting in and out is a breeze thanks to the sliding power doors on both sides. These can be opened from the front seat, and via several buttons in the rear.

Those captain’s seats are plush. Not quite Benz S-Class plush, but still.

They are adjustable six ways - power adjustable, of course - and they’re heated and ventilated. They recline almost flat, too, if you need a nap on the way to the country estate. And while you do that you can look up through the split sunroof, or close the shade a number of ways.

Is there a massage function? Of course there is a massage function. And it’s not bad. You can choose two settings - weak and firm.

Adding to the feeling of a business class airline seat, there is a fold-out table in the armrest, although it’s a smallish one. And there is dual-zone climate control in the rear.

There is a roof-mounted control panel for things like climate, sunshades and sunroof blinds, but much of this can also be controlled by the Apple iPhone-like devices clipped into both rear seats. These are closer to the seats, so it is easier to access than the roof.

Another function in the device is the Climate Concierge that features different modes - Dream, Relax, Focus, Energise. Depending on which one you choose, it alters the seat settings, massage, climate and lights to suit.

I love the massively wide side windows that are tinted (or privacy glass), too.

Other amenities include map pockets, knee and roof-mounted air vents and a 14.0-inch display screen that retracts from the roof and connects to an HDMI cable, allowing you to watch whatever you want.

The third row is not as appealing as the second. It is technically a three-person row, but the width and the fact that it has a sizeable gap in the centre suggests that this is best thought of as a six-seater van.

The seats are not as plush of course, so you might not want to spend too much time in that row unless you are a small child. But you do get USB-C ports, cupholders, air vents, lights, sunglasses holder, power side shades and grab handles.

Getting in and out of the third row can take a while. It’s all power adjustable, so you don’t have to lift anything heavy - but it takes a while for the second row seats to move forward and up.

With all seats in place the cargo space is limited. In fact, it’s just 110 litres.

That’s similar to what you get in a seven-seat SUV. But it did fit all our overnight luggage easily.

Drop the rear row and that expands to a maximum of 1191 litres in the 350h or 752 litres in the 500h.

All grades have a space-saver spare wheel.

For the beginning of our day with the S-Class, we were chauffeured from home to a mansion in Kew, a blue-chip Melbourne suburb. Our heavily-optioned S450L featured most of the aforementioned extras – including the Business Class Package and Rear Entertainment Package – and the experience was predictably, sumptuously memorable.

Reclining individual rear seats with easy-reach tablets, armrests offering access to all multimedia and available climatised and massaging cushions and backrests... we're no longer in our normal ride, Toto.

Yet, all these trinkets and gizmos are mere add-ons, that can turn a stretched Caprice into a flash hen's night carriage if enough money and glitz is thrown at it.

No, the new S-Class must impress in an altogether less tangible and more philosophical manner, involving all the senses, and not just what we see, hear and touch. It must appeal beyond the superficial. Otherwise, it is not a large Mercedes-Benz luxury sedan in the classic manner.

This is a Herculean task for the Stuttgart designers and engineers. By and large, though, the Three-Pointed Star has succeeded in achieving something special.

In its perception of peerless quality and engineering, the W223 is striving to move forward and look back simultaneously to the glory days of the seminal W126 (1980-1991). This is through meshing traditional virtues like solidity and quality materials while dazzling its passengers with technology that is still friendly enough to want to enhance your experience.

You can sink into the soft lounge seats, watch the world pass by silently outside and never be aware of the road underneath or the engine ahead. Double glazing, exquisite and aromatic fabrics and materials and lush tactile surfaces work their magic inside the car, while an airtight and aero body, solid platform, air suspension and a muted yet muscular powertrain all do their thing underneath. The atmosphere is special and rarefied. That's what an S-Class needs to be and that's what is happening in our $299,000 (as tested) S450L.

The same more-or-less applies up front, as the same trim, leather, wood and technology surrounds the driver and passenger. The spectre of the car that is surely The Car of the Last Decade – Tesla's Model S – is evident in the portrait touchscreen and sparse, almost wallflower dashboard design and layout. No big imposing architectures here.

Yet, while the American upstart actually takes stuff away, the S-Class packs the cabin with subtle features that – like when the planes stopped flying last year and the birdsong subsequently returned – only become obvious once the cabin's design simplicity clears all the white noise for you to be in a better frame of mind to enjoy them.   

Take the haptic interface, for example, as it is perhaps the best we've experienced; the sense of well-being garnered from the cumulative effects of profound seat comfort (the massaging function was never switched off), cocooning micro climate environmental control, orchestral levels of audio entertainment and the theatre of light and vision performed by the two available screens; it is an automotive experience like no other. And the eye-tracking 3D-effect navigation set within the electronic instrumentation. No need for cinematic glasses to get the effect. The driving position itself, by the way, is also first class.

Room to stretch and grow for sure, and in every direction. But room for improvement? You betcha.

Your tester had a headache after a little while staring at that woozy 3D map. The central vents – four at the front, two in the rear – look and feel cheap, leaving us mentally redesigning them; they are frightfully out of place here; the carryover column-stalk auto lever should have been binned in 2005. And, even though the digital instruments have a number of options, none are elegant enough for the S-Class. That's an especially subjective criticism, clearly, but one that – in the context of classic Mercedes luxury sedan contenders – is justified given how timeless the Bruno Sacco era of Daimler design was. Look him up, kids.

Still, after a couple of hours behind the wheel, with our senses reset to calm, it is obvious that the S-Class cabin is a unique and wonderful place – as it should be at a cool quarter-of-a-million dollars.

Job done.

PS At 550 litres (20L more than before), the boot is massive and luxurious enough to sleep in.

Right now, only two S-Class models are available – the S450 from $240,700 plus on-road costs and the 110mm extended-wheelbase S450L (LWB) for another $24,900 on top. Most buyers overwhelmingly opt for the latter.

Despite what the numbers may suggest, both are powered by a 3.0-litre in-line six-cylinder turbo petrol engine, delivering 270kW of power and 500Nm of torque to all four wheels via a nine-speed torque-converter automatic. Greater choices are coming later, including an all-electric version known as the EQS.

Almost every conceivable safety item is standard on the S-Class, including world-first rear-seat airbags located behind the front seats in the LWB model, taking the surround-airbag count to 10.

You'll also find route-based Speed Adaptation (adhering to the posted speed limits), Evasive Steering Assist (a sophisticated form of crash mitigation), adaptive cruise control with active stop/go, Active Lane Change Assist that automatically moves the car into the lane you indicate to), Mercedes' PreSafe crash-preparation tech that primes all the safety systems for impact, electronic stability program that encapsulates all the active driver-assist tech, Active Emergency Stop Assist, Autonomous Emergency Braking front and rear (including for cyclists and pedestrians), Traffic Sign Assist, Parking Package with Active Parking Assist and 360-degree camera and tyre pressure monitors.

On the equipment front there is the latest iteration of Mercedes' MBUX multimedia system with (another) world-first 3D display, complementing an OLED central display, powered closing doors, leather upholstery, air suspension, leather upholstery, velour floor mats, a multi-beam LED headlight system with adaptive high beams, heated and folding exterior mirrors, heat and noise-insulating acoustic glass for front side windows, dark privacy glass for rear windows, sunroof, roller sunblinds for rear windows, metallic paint and 20-inch AMG alloy wheels on runflat tyres.

Want cutting-edge multimedia? There's MBUX II's augmented reality for navigation and fingerprint scanner, as well as a more natural-speech Mercedes-Me Connect voice activation with global search.

Plus, predictive navigation with live traffic, parked vehicle locator, vehicle tracking, emergency call, maintenance management and tele-diagnostics, digital radio, Burmester 3D surround-sound system with 15 speakers and 710W amplifier, remote door locking/unlocking, geofencing, speed-fencing, valet parking, head-up display, Smart Phone integration with Apple CarPlay/Android Auto, wireless charging, ambient lighting, two-zone climate control, poplar wood trim, electric adjustment for front seats, steering column with memory function, climatised front seats, keyless entry/go with flush-fitting door handles offering hands-free access (including for the electric boot),

Besides the ‘forward facing' airbag for the rear-seat occupants, the S450L also scores electrically adjustable rear seats with memory and automatic rear climate control.

Key options – and the list is massive – include an $8700 Rear Entertainment Package, that brings rear-multimedia access, rear tablets with wireless headsets and rear-seat wireless smart phone charging, an AMG Line pack with a body kit, different alloys and larger front brakes ($6500), Business Class Package that includes aircraft-style reclining rear seating and tray tables ($14,500), Nappa leather ($5000), augmented-reality HUD ($2900), 21-inch wheels ($2000) and four-wheel steering ($2700). There's also a $14,500 Energising Package with contoured seating, heated-everything and massaging seats.

Please keep in mind our test cars featured many such extras. Tick all the boxes and you can add nearly $100,000 to the price of your S-Class.

So, is the S450 good value? Given some of the breakthrough safety and luxury features it offers, it is unique. Too bad the Federal Government's Luxury Car Tax makes them so much more expensive than they need to be.

There are two hybrid powertrains available. Coming next year, the LM500h combines a 2.4-litre turbocharged petrol engine and a hybrid setup, making for power and torque of 202kW and 460Nm respectively. It is all-wheel drive and is paired with a six-speed automatic transmission.

The LM350h comes with a 2.5-litre naturally aspirated petrol engine and a parallel hybrid system, offering up a total system output of 140kW and 239Nm. The 350h comes in front or all-wheel-drive guise and uses a continuously variable transmission (CVT).

Where are the V8s?

Right now, the only W223 you can buy is powered by an all-new 2999cc 3.0-litre in-line direct-injection six-cylinder turbo petrol engine dubbed the M256, complete with double overhead cams, an electric compressor intercooler and assistance from a 48-volt mild hybrid system and integrated starter-generator, adding 16kW and 250Nm to the 270kW of power at 6100rpm and 500Nm of torque from 1600-4500rpm.

The 9G-Tronic torque-converter automatic transmission and 4Matic all-wheel drive system combination is a first for the S-Class in Australia.

Top speed is limited to 250km/h, while the 0-100km/h sprint-time takes just 5.1 seconds in both models. Impressive for a two-tonne-plus luxury limo.

As you’d hope with an all-hybrid line-up, the LM excels when it comes to combined cycle fuel efficiency. The 350h FWD sips just 5.5 litres per 100 kilometres, while the AWD version is 5.6L/100km. The 500h is a little thirstier at 6.6L. 

Our drive was so brief we did not get to record an on-test fuel figure.

The theoretical range of the LM, considering the 60-litre fuel tank and 5.5L/100km (350h) and 6.6L/100km (500h) fuel consumption figures is about 1000km.

With the aid of the mild-hybrid system, the S450 returned a combined average of an impressive 8.2 litres per 100km, which translates to 187 grams of carbon dioxide emissions per kilometre. 95 RON premium unleaded (or higher) is recommended. In the urban run it consumes 11.3L/100km (11.5 for S450L), and just 6.4L/100km (6.5 for S450L) in the extra-urban result.

At 76 litres, the fuel tank will allow a combined average range of about 927km between refills.

As mentioned earlier, I spent much more time in the second row as a passenger than I did behind the wheel of the LM350h. But it was enough time to capture some initial high-level drive impressions.

But let’s start in the rear. The ride in the second row is comfortable - as you’d hope. Our trek from Melbourne’s inner north down to the Mornington Peninsula included a lot of freeway, which was smooth. The only thing that disturbed the peace was a chunky bridge join that caused a bit of a thump. But we were hardly disturbed. 

Back in the driver’s seat, there’s a lot to like about how the LM350h drives. First of all, it feels smaller on the road than its ample dimensions would otherwise suggest. It even feels relatively light on the road. 

After the LM, I drove a Mercedes-Benz EQE SUV that has a similar kerb weight (the Lexus is about 2.4 tonnes), and the LM felt lighter.  

The hybrid powertrain is responsive enough, offering decent acceleration from a standing start. The more potent 500h will of course be quicker.

The transition from electric to petrol propulsion is pretty smooth in Lexus (and Toyota) models these days, and the additional noise-deadening materials in the LM ensure it’s subtle.

The 2.5-litre petrol engine is really only noticeable when accelerating hard, and the CVT a slight drone, but it’s in no way unpleasant. 

Otherwise it’s a superbly refined and quiet cabin on all but the absolute worst road surfaces. Whisper quiet power windows adds to that feeling of luxurious refinement.

Given the brief time behind the wheel, we didn’t get to test the handling capability of the LM, so that might have to wait for a review in the New Year. 

The steering is heavily weighted and doesn’t feel overly responsive, but it’s perfectly suited to this sort of vehicle.

That supple ride we experienced in the rear was also evident behind the wheel.

This was especially impressive on a couple of pock-marked peninsular back roads. The ride is also much more compliant than the Mercedes-Benz EQV I tested early in 2023.

In former times, as the Germans say, a ‘450' on the boot indicated V8 power. In the W116 S-Class era it was one of the world's most evocative badges when ‘SEL' was also attached.

As mentioned earlier, though, it's the M256 3.0-litre turbo-petrol with a 48-volt ‘mild hybrid' electrical system that's doing the driving, to all four wheels. The real V8 W223 will probably surface later this year or in early 2022 with the S580L flagship. Bring it on.

This is not to say that S450 isn't good enough. With that electrified assistance, the blown straight six is smooth and swift off the line and rapid as the auto seamlessly steps up through all nine gears. Because it's so hushed and refined, it doesn't feel 5.1s to 100 clicks quick, but watching the speedo says otherwise – acceleration is assertive and strong right up way past the legal speed limit.

All that's missing is the burbling soundtrack of a classic Benz bent-eight. Oh well. Outstanding economy is a price we're literally willing to pay in lieu.

Even more impressive is the S450's ability to hustle along mountain roads like an overgrown sports sedan.

Now, for Australia, all S-Classes are fitted standard with an adaptive ‘Airmatic' air-suspension set-up, including air springs and self-levelling tech. In Comfort up to 60km/h, the ride height can be raised by 30mm, or lowered by 10mm under the standard 130mm baseline in Sport at any velocity, while in Sport+ it falls another 17mm.

With that in mind, yes, the standard air suspension performs a magnificent job smothering out most surface imperfections around town. Yet its real other party trick is to tighten up the chassis when corners get interesting and Sport mode is selected. Aided by progressively weighted and reassuringly responsive steering, the Mercedes tips into turns with precision and poise, slicing through with virtually no discernible body lean or understeer.

Now, we're not talking a leisurely drive on rural highways here, but Healesville's famous Chum Creek Road, where even a Porsche Cayman would feel like it's had a strenuous dynamic workout. The S-Class can be hurried along with confidence and finesse, displaying outstanding handling and roadholding for a 5.2-metre long limo. And the fact that the ride quality only suffers marginally when the red horns are out is all the more remarkable.

Back in the cut-and-thrust of inner-city peak-hour traffic, the Benz in Comfort mode continued to reveal its driver-orientated yet passenger-focused twin-personalities, zipping in and out of gaps while remaining comfy and composed inside.

Only when parking in tight spots are you truly aware that the W223 is longer than a Mazda CX-9. The optional four-wheel-steering system is claimed to slash the turning circle to A-Class hatchback levels. 10.9 metres is the claim.

The 2021 S-Class never ceases to amaze and delight.

The W223 S-Class has not been crash-tested yet by ANCAP or European affiliate EuroNCAP, so does not have a star rating. However, Mercedes-Benz claims it has striven to create one of the safety vehicles on the planet. Who are we to argue?

Almost every conceivable safety item is standard on the S-Class, including world-first rear-seat airbags located behind the front seats in the LWB model, taking the surround-airbag count to 10.

You'll also find route-based Speed Adaptation (adhering to the posted speed limits), Evasive Steering Assist (a sophisticated form of crash mitigation), adaptive cruise control with active stop/go, Active Lane Change Assist that automatically moves the car into the lane you indicate to), Mercedes' PreSafe crash-preparation tech that primes all the safety systems for impact, electronic stability program that encapsulates all the active driver-assist tech, Active Emergency Stop Assist, Autonomous Emergency Braking front and rear (including for cyclists and pedestrians, at speeds from 7km/h to over 200km/h), Traffic Sign Assist, Parking Package with Active Parking Assist and 360-degree camera and tyre pressure monitors.

The Active Lane Keeping Assist works in a speed range of between 60km/h and 250km/h while Active Steer Assist helps the driver follow the lane at speeds of up to 210km/h.

When you buy a Lexus, you get a bit more than a car. The brand has a customer loyalty program - Lexus Encore - and depending on what model you buy, you are eligible for some pretty cool discounts, bonuses and experiences. 

There are three tiers, depending on your model. UX, NX, RX and ES fall under regular Encore, and electric models the RZ and UX300e sit beneath Electrified Benefits. But the LM, as well as the LS, LC and LX are under Encore Platinum - the top tier. 

That means access to the ‘On Demand’ program that allows access to another Lexus model for a few days or longer. So if you own an LC Convertible but need an RX for a few days to ferry people around, that’s all free. There’s valet parking service loans and more.

It also includes upgrades at Lexus partners. Our launch took us to Jackalope Hotel on the Mornington Peninsula, which is a Lexus partner, and you can get a bunch of extras here as a Lexus owner that other guests won’t get.

In terms of other ownership details, the LM is covered by a five-year, unlimited-kilometre warranty, and the servicing schedule is every 12 months or 15,000km.

Lexus is yet to announce the capped-price servicing details for LM, but it is expected to cover five years, and should be in the vicinity of approximately $700 per service.

Unlike many luxury brands that persist with a sub-par three-year warranty, Mercedes-Benz offers a five-year/unlimited kilometre warranty.

Intervals are every year or 25,000km, with a capped price service plan starting at $800 for the first year, $1200 for the second year and $1400 for the third year, totalling $3400. Alternatively, there is a Service Plan starting at $2700 for the first three years (saving $700 from the normal capped-price service plan), $3600 for four years and $5400 for five years.