Mercedes-Benz S400 vs Volvo Es90

What's the difference?

The 2018 Mercedes-Benz S-Class remains a technological tour de force, a luxury sedan to be reckoned with - one that has safety, technology, comfort, finesse and performance all rolled into a stylish package. 

It's hard to see why you'd need anything more than the S 350 d, which is now much more attractively priced. It'd be my pick, but I'd have to get the Energizing Comfort Control package, and probably the AMG styling pack, too. And even then it would cost less than its predecessor.

More stylish than ever before, as quiet and refined as you'd expect from a luxury car and yet the stand out feature might once again be safety. Despite seemingly every new car being loaded to the gills with safety features, Volvo has managed to demonstrate industry best-practice and leads the way again.

I would encourage engineers from every other car brand to drive the ES90 to learn how to better integrate the modern suite of active safety features like forward collision warning and lane departure warning.

But beyond that, is the ES90 a car worthy of consideration? Well, pretty much everything it does the EX90 does too, so if you prefer an SUV that’s definitely worth consideration. But if you don’t want an SUV, if you prefer a sedan or just love to be different, the ES90 is a very attractive proposition in more ways than one.

I swear it has been facelifted, and the changes are bigger than they might appear. There is no doubt that the S-Class shape is largely unchanged, but the German company has kept the modifications minimal in the scheme of things.

That doesn’t mean those changes are unnecessary, though. The new headlights, for example, are standard on every model, and are constructed with 84 LEDs (including three for the daytime running lights), and of course they’re adaptive with automated high-beam - meaning they’ll shield other road users from the glare of the lights at night. And the lights themselves will throw a main beam up to 650 metres, according to the company. 

Other things are slightly more cosmetic, like the revised three-bar grille treatment, new front and rear bumper designs that feature broader sculpted sections to widen the stance of the car, and there are new LED tail-lights as well.

The smallest set of wheels used to consist of 18-inch rims, but now the base car rolls on 19s, while the rest of the expansive range sits on 20s. 

The inside has seen some changes, too, but the appearance of things in the cabin isn’t the focal point - its the usability of the technology that's the big change. 

Oh, but I should tell you there are now 64 ambient lighting colours to choose from, which is up from seven, and now you can also set the lighting in three different zones - so theoretically you can have blue, orange and green areas of the cockpit, if you’re gross.

Discussing Volvo design will draw different opinions depending on your age. As a millennial, I grew up at a time when Volvos were, to quote a famous movie line from the 1990s, ‘boxy, but good’.

But over the past two decades Volvo has smoothed off those boxy edges and become one of the most style-conscious car companies in the world. It has embraced its now-unique place as a Scandinavian carmaker and uses softer edges and more Nordic design themes (such as light coloured interior woods) to ensure the ES90 is simply a good-looking car.

What it isn’t, at least not technically-speaking, is a sedan. That’s because it has a liftback rear-end design, rather than a traditional ‘three-box’ sedan with a conventional boot. That shouldn’t be a deal-breaker for anyone and it means it’s a far more practical design.

It also sits taller than a conventional ‘sedan’, which is an increasingly common trait for modern European sedans as they try to woo would-be SUV buyers. It’s not a lot, you certainly wouldn’t call it a tall or high-riding car, but it is noticeable.

Ends up as an ‘in-between’ design, neither one thing or the other. The closest thing it reminds me of is the short-lived BMW 5-Series GT, which is damning with faint praise, but it speaks to the challenge of making something that simply isn’t an SUV appealing to the modern SUV-obsessed market.

The very stylish cabin features that previously mentioned light coloured wood (at least in our test car) and that unique Scandinavian look. It’s the closest you’ll get to sitting in a Swedish lounge room on wheels.

If you’re buying a Mercedes-Benz S-Class there’s a good chance you’re more interested in the back seat than the front: you could be buying it for a business, or you could like to be driven around - and there are definitely worse places you could be.

We would suggest, though, that the best place you could be if that’s your caper is in the back of a long-wheelbase S-Class model, which has extra legroom. 

And if you happen to be in a LWB model with the 'Business Class Package', you’ll enjoy two individual rear seats rather than a three-seat bench, folding tables for your bento box or laptop, and an ‘executive seat’ on the passenger side that features a foot rest and allows you to slide the front seat forward to liberate more room. Deluxe. 

No matter if you are in one of the stretched models demarcated as such by the ‘L’ suffix or not, you will enjoy excellent seat comfort and good head- and shoulder-room. Legroom in the regular models isn’t as plentiful as you might expect: much more affordable cars like the Hyundai Sonata give the S-Class a run for its money in that regard.

There are good storage options for odds and ends, with the back seat featuring a fold-down armrest with pop-out cupholders and a storage box, as well as map pockets - and the boot space varies depending on the model, but the S 350 d has a 510-litre cargo capacity (VDA). All four doors have bottle holsters, and a bit of extra room besides. Of course there are rear-seat air-vents, and if you’re kids are lucky enough to ride around in a S-Class, the two ISOFIX/three top-tether points will be welcome.

Up front there are two cupholders between the seats, and a new wireless phone charger in the centre console (Qi compatible phones only). There are two USB ports as standard in most models, while models with the rear seat entertainment package fitted get rear USBs. 

The huge screen that runs across two-thirds of the dashboard has seen the noticeable join marker removed for this update, with the monitors being upgraded to a higher resolution and the graphics have been reworked, too. The codpiece-style controller of the Comand media interface remains, and while it still isn’t as simple as other controllers, it is reasonably easy to get used to. 

So … what about Beyonce? 

She comes in as part of the Energizing Comfort Control system, which is standard in some models and a $1400 option in those that don’t have it fitted. 

Essentially it allows you to choose between different set moods: 'Joy', 'Freshness', 'Vitality', 'Warmth', 'Comfort' and 'Training', the latter of which offers three different stretching/exercise programs that last for 10 minutes to stop fatigue. The instructions are given by voice over the sound system.

Each of the moods will adjust the temperature and ventilation (the Freshness setting offers ‘gusts’ of fresh air as if you’re at the beach!), ambient lighting, air fragrance and intensity, and the massage function for the seats. And the music bit - there are predefined songs the system can cue up to suit the mood, or it can identify songs on a hard-drive or USB that suit the programs by analysing the tempo of the tune. Amazing, right?

The new steering wheel looks a lot sportier than the one in the pre-update car, and it has finally done away with the awkward cruise control stalk in favour of steering wheel buttons for the adaptive cruise control system.

In terms of space the ES90 is very generous, which it should be given it's a five-metre long car. There’s loads of room front and the back so you’ll seat four adults in absolute comfort, and can squeeze in a fifth if needed. Thanks to the relatively flat floor, as well as the panoramic roof that can either be opaque or clear, the cabin feels spacious and bright even in the rear.

As for luggage space, the boot measures 424 litres, and obviously it’s very easy to access via the power liftgate. But it’s still not as big as an SUV. The EX90 offers up 655 litres of space in its five-seat configuration. Which is at least a small part of the explanation why SUVs have become the more popular choice.

But what really stands out in the cabin isn’t the space, it’s the technology. The ES90 Ultra’s multimedia system is centred around a 14.5-inch touchscreen that runs all the car’s key functions; you also get a 9.0-inch driver’s display.

Notably, Volvo has opted to offer Google’s operating systems built-in, which means while you can still run Apple CarPlay or Android Auto, if you have a Google account you can sign-in and have your contacts, address book and other details integrated into the car.

It’s a really fast system, too, supported by the most powerful software Volvo has ever put inside one of its cars. Having a big tablet-style screen is great and feels very modern, but if it runs slowly, with lag between commands, it’s not as useful. This Volvo system, particularly the transitions between menus and even the voice assistant, reacts with lightning-fast speed.

Then there’s the sound system we mentioned earlier. It’s a 25-speaker Bowers & Wilkins set-up with 'Dolby Atmos' and an app called Abbey Road Studios. This app has been produced in conjunction with the iconic recording studio made famous by The Beatles. The speakers and the app were all developed together to provide a superior audio experience.

The speakers themselves are incredibly powerful while staying crystal clear, with the Abbey Road app providing the ability to change the sound between 'Modern' and 'Vintage' settings that make you feel like you’re inside a recording studio.

Put simply, it is as impressive a sound system as I’ve ever experienced in a car.

The ES90 range consists of two models at the time of publication both powered by a single, rear-mounted electric motor, with the twin-motor option available on the EX90 SUV currently not offered in Australia (emphasis on the word ‘currently’).

The range begins with the Pure from $88,880, before on-road costs, and is completed by the current range-topping Ultra variant, which we're testing, priced from $107,990, plus on-roads.

That means it’s cheaper than its direct rivals in the luxury electric sedan market. Audi’s e-tron GT starts at more than $200,000, the BMW i5 line-up is priced from $155,900 and the Mercedes-Benz EQE range begins at $134,900. So, even with this more expensive Ultra variant, Volvo has a clear head-start on the competition.

And Volvo hasn't managed that by skimping on standard equipment. The ES90 comes loaded with adaptive air suspension, 22-inch alloy wheels, a comprehensive safety package (as you’d expect from Volvo) as well as an electrochromic panoramic roof, a smart key you can add to your phone and 'Nordico' upholstery - Volvo’s sustainable synthetic leather.

There’s also a 25-speaker Bowers & Wilkins sound system, but more on that later…

The big news for the majority of S-Class buyers is the new engine in the S 350d, which is a 2.9-litre in-line six-cylinder turbo-diesel with 210kW of power and 600Nm of torque. It has a nine-speed automatic and is rear-wheel drive (RWD).

That same diesel engine is wicked up in the S 400d L, with that model churning out 250kW and 700Nm, and remains rear-drive with a nine-speed auto.

The petrol model range is opened by the S 450 L with a 3.0-litre six-cylinder twin-turbo mill producing 270kW/520Nm. Again, nine-speed auto, RWD.

The S 560 and S 560L run the same 4.0-litre twin-turbo V8 petrol with 345kW of power and 700Nm of torque. Nine-speed auto, rear-drive - naturally!

The AMG-fettled S 63 has a thumping twin-turbo 4.0-litre V8 petrol engine with 450kW and 900Nm, with a nine-speed MCT multi-clutch auto and - you guessed it - RWD.

As the name suggests, the ES90 Single Motor is powered by a single, rear-mounted electric motor that drives the rear wheels via a single-speed transmission. The motor makes a healthy 245kW and 480Nm, so the 0-100km/h sprint time is 6.6 seconds - sprightly for such a big car.

As alluded to earlier, there is a Twin Motor, all-wheel drive ES90 variant available in overseas markets, with 500kW, but Volvo Australia is yet to confirm when, or even if that will arrive here.

The diesel models are - unsurprisingly - the most frugal in the range, with the entry-level S 350 d using a claimed 5.4 litres per 100km across a range of disciplines.

The S 400 d L - which uses a higher-output version of the same diesel drivetrain as the model above - uses only a minuscule amount more: its claim is 5.5L/100km. 

The most frugal of the petrols is the S 450 L, with its six-pot petrol twin-turbo using a claimed 8.4L/100km.

Every model has stop-start - including the AMG - and the V8 petrols also feature cylinder deactivation when in 'Eco' mode.

That cylinder deactivation system helps the S 560 achieve an incredibly low claimed consumption of 8.5L/100km. So does the longer, slightly heavier S 560 L.

The higher-out Mercedes-AMG S 63 L uses 9.0L/100km, according to its claim. Amazing for the outputs of the engine.

Built on Volvo’s 800-volt electrical architecture, the first Volvo to feature the technology, the ES90 is powered by a 92kWh battery that provides up to 554km of driving range on a single charge.

Volvo quotes an NEDC energy consumption of 18.5kWh/100km, with 300kW DC charging able to take the battery from 10 to 80 per cent in 22 minutes. A full, empty to 100 per cent charge using a 16A outlet will take 10 hours.

It should be noted that the EX90 SUV will be upgraded to the 800V architecture with the 2026 model year introduction.

Smooth. It wasn’t even because I’d chosen the Energizing Comfort Control mood to elicit that vibe. It’s smooth - and so it should be.

Whether it’s the near-silent new six-cylinder diesel, which hauls the near two-tonne sedan along with less fuss than a medical centre receptionist dealing with a room full of coughing patients. There is no fuss. You just hand over control to the engine, and trust it will get you where you need to be.

The V8 petrol in the S 560 also has a bit of a silent killer vibe to it. There’s perhaps not as much noise as a V8 fan might want, but the mumbo is there, and in both cars the gearshifts are sublimely timed and super smooth.

Admittedly, the stiff-sided run-flat tyres on both the 19- and 20-inch wheels can exhibit a slight terseness over sharp edges, but when it comes to rolling over pockmarked surfaces or rougher country backroads, the ride offered up by the air suspension with variable dampers is superb. Put it in Sport mode and it stiffens up to the degree you’d expect, but Comfort is no doubt the best place to be.

The steering is super light but accurate, meaning it’s easier than you’d think to pilot this behemoth of a sedan through corners. The grip on offer is excellent, too, even if traction can be an issue - I had a full couple of seconds of strobe light action from the traction control light when I buried the throttle in the S 560. 

I didn’t get a chance to drive the six-cylinder petrol S 450 L, or the S 400 d L. And, I’m really sad to report, there was no opportunity to drive the AMG S 63 L, either. 

But the overall feeling of the updated range is that it remains a deluxe and delightful limousine - whether you have the good fortune of being in the driver’s seat or not.

As you’d expect from a luxury, electric car the ES90 is a quiet and refined vehicle to drive. Being a Volvo, the company has used its experience where it matters, and there is excellent insulation from the outside world. Unlike some EVs that lose the engine and hope that just makes things quieter, the ES90 gives you a genuine feeling of insulation from the exterior hustle and bustle. 

Performance is adequate from the single motor but it’s by no means a sports sedan with only 250kW/480Nm and such a big vehicle. But it has the instant response that is an EV trademark so it has all the performance this type of car and the drivers it will attract would likely need. If buyers start banging on the door for more power, Volvo can oblige, but for now it does the job you expect of a luxury four-door.

While it has the sedan silhouette, the taller body and raised ride height on the air suspension are noticeable. You will find yourself looking up at SUV drivers, but not all of them. It’s roughly the same seat height as you’ll find in a modern small SUV, so a slight elevation rather than a big boost.

The ride is what you expect from this type of car. You can adjust the suspension and steering between ‘soft’ and ‘firm’ settings, but even with the latter selected there is a lot of compliance and the ride remains comfortable.

The steering is fine most of the time, but when you have to do parking maneuvers you certainly notice the ES90's steer-by-wire technology. The steering literally feels like an old computer game steering wheel set-up, with very little resistance as the wheel lightly spins from lock-to-lock. It’s not a bad feeling, but it is a bit odd and takes some getting used to.

The ultimate take-away from the driving experience is just how relaxed it is - quiet and effortless are the two words that probably best sum it up.

This is obviously the area that Volvo is famous for, but with seemingly every other brand forced to raise their own safety features over the years, does the Swedish brand still do anything special on this front?

Absolutely.

Put simply the Volvo suite of active safety systems is better developed and better integrated. Every rival car to the ES90 will have a similar list of features, including adaptive cruise control, forward collision warning, lane departure assist, road sign information and more. But Volvo has made it work so well that unlike rival models, you never even think of turning them off, they don’t beep and bong ad nauseum, they only work if you need them in an emergency - which should be the standard.

One thing to note is the ‘bump’ on the roof (you may see in the images) to house a Lidar system. However, Volvo split with its supplier and has decided to abandon this technology for the ES90. That means the 2026 model year examples will not have the roof bump, but still come loaded with five radars, seven cameras and 12 ultrasonic sensors for the excellent coverage of the surrounding environment.

The only thing that stops the ES90 being worthy of a 10/10 safety score is the lane keeping assist could do with some fine-tuning, as it has a tendency to move in the lane slightly too much.

There is no current ANCAP score for the ES90, but the EX90 SUV does, and given the organisation's previous sharing of scores between different models based on the same core underpinnings, there is no reason to believe the ‘sedan’ wouldn’t be just as safe.

Mercedes-Benz offers a standard three-year/unlimited kilometre warranty.

Servicing is due every 12 months or 25,000km on all engines except AMG drivetrains, which require servicing every year or 20,000km. 

Mercedes-Benz has a (pricey!) capped-price servicing plan. The standard diesel and petrol models in the S-Class range cost $596 for the first service, and $1192 for the second and third visits. The costs for the sole AMG model is $736 for the first service, then the second and third visits are $1472 per.

The ES90 is covered by Volvo’s five-year, unlimited kilometre warranty, which is competitive for the luxury market even if it’s shorter than the cover some mainstream brands offer.

Servicing costs are currently unclear, at the time of publication. Volvo Australia typically offers five-year servicing plans for its models but is yet to finalise the cost for its electric vehicles.

Despite its long history in Australia, Volvo still has a relatively small footprint in this country with only 28 dealers/service centres spread across the country. However, more are planned to expand that coverage in the coming years.