Mercedes-Benz S560 vs Cadillac Lyriq

What's the difference?

Both of these vast vehicles are phenomenally comfortable - this is the kind of car that Mercedes does so well, and has done for decades. The S Class is rarely a disappointment but it's difficult to believe that such a big, heavy GT car can also dance the way the S63 does.

The S560 is far more weighted to being a GT - supremely comfortable with that active suspension, a growly, refined V8 and a cabin full of gadgets and comfort. The S63 is altogether more aggressive, to look at and to drive. Lopping the roof off both of them adds weight but, like any cruiser, also puts you out in the sun, the breeze and into your surroundings. Plus, in the case of the S63, you get more exhaust noise.

They're two very different cars and not just because of the engine. After all these years admiring it from afar, the S63 has delivered on my teenage expectations - fast, smooth and utterly mad.

It's got a couple of quirks, but the Cadillac Lyriq is a pretty convincing, and definitely American, take on a premium electric vehicle in Australia. The only issue, I think, is that, while the brand is obviously iconic in the USA, it's not that well known in Australia, and we are a market now awash with pretty good, and often much cheaper, EVs from China. It's a hyper-competitive market. Only time will tell if Cadillac can convince Australians that its badge belongs among the European premium marques.

The S Class Coupe is obviously related to the sedan but manages a svelte appearance. Slimmer hipped and with a more Coke-bottle shape, the Coupe - if you squint a bit - has a bit of the classic old pagoda about it. Obviously you can't do pillars that slim anymore, but the glass roof takes away some of the visual weight inside and out. 

The cabriolet's roof is nicely integrated and looks good when it's  up, which isn't always the case.

They all look long, though. It's obvious to see why the cars all run on 20-inch wheels - anything smaller would look hilarious.

The cabin is a fairly sensible re-imagining of the E-Class. The big twin-screen layout of the dash and multimedia system seems a bit more at home here. The chintzy Burmester speakers in the doors let down an otherwise classy cabin, which steers clear of otiose vulgarity in looks and materials.

The Cadillac looks… well, it looks American, right? A kind of difficult-to-describe Americanness that’s somewhere between an SUV and state car.

That’s not an insult, by the way. I personally think the Lyriq looks kind of pretty, with its bold elements countered by the surprisingly gentle touch applied in places, like its razor-thin daytime running lights (DRLs).

I’ve got to say, it doesn’t look much like any of the other new SUVs arriving, or a knock-off German brand. It’s got its own persona.

The cabin of the Lyriq is predictably plush, with comfy massaging seats, soft-touch materials and plenty of tech, but it is a little shiny and busy in places for my tastes. Minimalist this is not.

But I do like the fact that – when I’ve got Apple CarPlay hooked up – I can just leave the screen be. My driving stuff is accessed by the wheel, and everything else I want is accessible through physical buttons.

There are some strange elements, though. The grab handle on the driver’s side, which isn’t replicated on the passenger side, is odd, and likely a byproduct of the factory moving the steering wheel. Some of the central storage bins are too small to be really useful, and I hate gloveboxes that can only be opened through the screen.

Well look, if you end up in the back of the S Coupe, it's not a riot of space. Obviously it has back seats (the SL doesn't even squeeze a jump seat into its considerable length) but they're for occasional, if luxurious, use.

The boot is a reasonably decent 400 litres, obviously the cabriolet loses a few litres with the roof folded. Front and rear passengers will both enjoy a pair of cupholders and the whopping long doors will each hold a bottle.

It’s a big boat, the Lyriq, stretching more than five metres long and almost two metres wide. That’s not much shorter than, and in fact slightly wider than, something like a Nissan Patrol, just to put it into perspective. Though of course it’s nowhere near as high as a proper 4WD.

Predictably, though, its dimensions mean plenty of room in the boot, which opens to reveal a very useable 793 litres of luggage space. Drop the seats, and that number grows to a massive 1722 litres. 

But the Lyriq does without any spare wheel of any kind. A tyre repair kit is your only option.

Now, the backseat. And I know this is likely only of interest to parents of newborn babies, but that’s me, so I noticed. These are some of the best ISOFIX attachment points I ever used. Usually you’re fumbling around between the seat cushions trying to line up the latch points, but the Lyriq's solution — while perhaps not the most visually alluring – puts the brackets beneath plastic lift-up flaps, and they're so damn easy to use. 

But there are some quirks in the backseat, too. Those same ISOFIX attachment points, which are so great for baby seats, are less great for the adults actually sitting in the back. You can feel the hard plastic covers, and what feels like the bracing bar running across the backseat, beneath the cushions. It's not diabolical, and if you shift your rear-end forward slightly you can't feel it at all, but it's a strange quirk all the same.

Elsewhere in the backseat, there is plenty of room for backseat riders, and you can control your own temps, too.

You can have your Cadillac Lyriq in two flavours — the Luxury, yours for $122,000 plus on-road costs. Or the Sport, which is two grand more, listing at $124,000.

Perspective time. The new Polestar 3 starts at around $118k, but climbs to more than $130k for the dual-motor options. The similarly sized BMW iX starts at more than $140k, and the Mercedes-Benz EQE is north of $135k. So if you consider the Cadillac a ready-made premium brand, then its looking like a relatively sharpish one. 

Cadillac says the changes between the trims largely focus on the “aesthetic signature” rather than any major equipment differences. The Luxury gets chrome highlights, for example, while the Sport gets a darkened design theme, including the wheels, body highlights and windows.

Both trims are otherwise identically equipped, which means 21-inch alloy wheels, full LED lighting, an electric sunroof, an auto-opening boot and a touch-to-open charging port.

Inside, there’s a 33-inch digital dash, with Apple CarPlay and Android Auto, wireless device charging, a thumping 19-speaker AKG stereo and USB connection points galore.

The leather-wrapped front seats have heating, ventilation and a massage function, there’s heating and cooling for the window seats in the back, tri-zone climate control and there’s 126-colour ambient interior lighting.

All four coupes and cabriolets ship with Daimler's formidable 4.0-litre twin-turbo V8. The S560 scores 345kW/700Nm to drive the rear wheels through Benz's own nine-speed automatic. With all of that available, the S560 will crack the ton in 4.6 seconds and make a wonderful racket on the way.

Moving on to the S63, the same engine delivers a massive 450kW/900Nm. The run from 0-100km/h is dispatched in just 3.5 seconds and if I thought the S560 made a good noise, the S63 with its standard sports exhaust makes a better one. Again, Mercedes' nine-speeder is along for the ride.

All Aussie Lyriqs are dual-motor affairs, with an electric motor at each axle producing a total 388kW and 610Nm, which in a car this big, which weighs just under 2.7 tonnes, is more than enough to get the Caddy up and moving, but not enough to make it feel like a supercar. The two motors mean AWD, of course.

The lower-powered 560 drinks 98RON at the rate of 8.5L/100km for the coupe and 9.9L/100km for the heavier cabriolet.

The S63 ups the ante with 9.9L/100km for the coupe and an identical 9.9L/100km for the cab.

Our launch program contained some...er...spirited driving, which would explain the mid to high-teens fuel figures.

The Lyriq is equipped with a 102kWh lithium-ion NCMA battery, which delivers an ok 530km on the combined cycle. I say 'ok', because the BMW iX offers 600km-plus, while the dual-motor Polestar 3 is more like 630km claimed. Energy consumption is a claimed 22.5kWh per 100km on the combined cycle. 

When it comes to plugging in, the Lyriq is set up for 190kW DC fast charging, with the brand promising 128km of range in 10 minutes, or 10 to 80 per cent in just under 30 minutes. At home, a 7kW wall ox will deliver more like 43km an hour.

Let's start with the S560. That smooth V8 rumble is all you'll ever hear if you just slot into drive and go for a leisurely spin. The nine-speed automatic continues to be a revelation to me - in the GLC63 it's good and here, once again, it's excellent, finding the right gear for the occasion and riding the fat torque curve. Other nine-speed autos are not very good at all.

The test route for the S560 played to the strengths of the car. It had some lovely winding roads, which brought the trick suspension into focus - the Magic Body Control with curve function is hilarious. While the active suspension works hard at all times to ensure the ride is smooth and drama free, the Curve mode (no, really) actually leans the car into corners.

Those of you who remember the video game Wipeout 2097 will be big fans of Curve mode. As you approach a corner, you turn the wheel and then the car leans into the bend. This isn't active damping reading the road, it's the outside suspension lifting the car and the inside lowering it, so the car feels like it's gliding, like a hovercar. It's wild but oddly calming. Mercedes reckons it's great for those who get car sick. As I didn't have my wife on hand to test this theory - she chucks at the first sign of a corner - I couldn't verify this claim. That will have to wait.

The S63 AMG is a completely different proposition. The air suspension is more than up to the job of helping smother the effects of the car's considerable weight, meaning that no matter what you're up to, the car feels reasonably light on its feet. It never feels small, though, commanding the respect of the driver and plenty of space from other road users.

And boy, do you need some space if you kick the S63 into Sport mode. In true AMG style, the electronic reins relax and the big luxury coupe cheerfully kicks off. The tail will wriggle under an unsympathetic right foot, that signature V8 roar, crackle and hiss filling your ears. The S63 is always the harder-feeling car, but it delivers with a more sporting drive than the S560.

Being the generous soul I am, I volunteered to return the S63 to its home for the evening rather than consign it to the back of a truck. On the back roads I took to reach the highway, it was rock solid - fast, predictable and a lot of fun. Once I found the boring straight bits, it turned into a supremely comfortable cruiser, ticking along in ninth at the legal limit (and being Melbourne, it was very much the legal limit), dispatching overtaking with barely a flex of a toe. 

The active cruise took the stress of keeping away from the State Revenue Office's clutches while being quiet and utterly pleasant.

The first thing you notice behind the wheel of the the Lyriq is just how whisper-quiet it is on the road. Cadillac makes a big deal about its 'Active Noise Cancellation' tech that's deployed here – it uses sensors to monitor road vibrations and the like, and then uses the car's stereo to create what it calls an 'anti-noise' signal.

It all sounds pretty high-tech and complicated, but it also works, with the Lyriq a seriously quiet and composed way to get around, with only the artificial EV noise really noticeable in the cabin.

Even travelling past freeway speeds, the Lyriq remains quiet, which does lend the whole experience a sort of premium vibe.

The Cadillac is also one of those cars that thinks solidity means premium, from the solid 'thunk' of the doors shutting to a general heft and weight to the steering, there's nothing feather-light or agile about the Lyriq experience, but it does all feel a little artificial, and like it's trying to be heavy on purpose.

The Lyriq, then, is no out-and-out performance car – it's 2.5-tonne-plus kerb weight and Olympic swimming pool dimensions largely put an end that – but it's more than brisk enough to get up and moving, with its twin-motor powertrain finding grip even in slippery conditions. It's brisk, but not brutal.

The Lyriq hasn't been tested or tuned in Australia, but happily it doesn't have that floaty, wafty suspension style so popular in the USA. This one feels to have at least had an international tune, which removes some of that marshmallow softness and makes you feel connected to the road.

The steering, too, feels direct enough and easy to predict, and the overall impression is one of quiet, calm motoring, which is probably what it says on the tin of any premium vehicle.

The Lyriq hasn’t been crash-tested in Australia, but it did get a five-star equivalent in American testing. There’s autonomous emergency braking (AEB) with pedestrian protection and junction assist, as well as active blind spot monitoring and assist. There’s also a side bicycle alert to stop you opening your door into someone, rear pedestrian alert, adaptive cruise and a total eight airbags, including knee bags for the driver and front passenger.

Interestingly, the Lyriq ditches those annoying safety bings and bongs for a novel, and far less intrusive approach which involves sending gentle vibrations through, well, your backside if the vehicle senses incoming danger.

Mercedes offers a three-year/unlimited-kilometre warranty with roadside assist for the duration.

The company also offers both service plans (where you pay up-front as part of the vehicle purchase) and capped-price servicing on the coupes. Servicing over three years is in the order $2500.

Cadillac has built a pretty convincing ownership package around the Lyriq, which begins with a five-year, unlimited-kilometre warranty, and an eight-year, 160,000km battery warranty. Beyond that, you also get five years of servicing, and five years of roadside assistance, free. 

Then you get a year’s free public charging through the Chargefox network and a free home wall box charger. If you have a wall box, or don’t want one, you can trade the home charging for an extra two years of free public charging.