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The fastest-accelerating and most powerful series production AMG to date isn't some slinky supercar, it's a truly enormous four-door, four-seat barge that weighs just a smidge under 2.4 tonnes.
Surprised? Welcome to the wonderful world of electrification, one where manufacturers can produce physics-bending performance by combining an internal combustion engine (ICE) with an electric motor, just so long as they're willing to put up with some extra weight.
And so it is with the Mercedes-AMG GT63S E Performance Coupe, which is a plug-in hybrid, though perhaps not quite as you know them.
Efficiency is not the name of the game here. Performance, and lots of it, is the goal. And, thanks to the combination of a twin-turbo V8 engine and a powerful electric motor, this big beast delivers plenty of it.
Surprisingly, for people who would rather be driven than drive themselves, there are quite a few options available in the large luxury sedan market.
While on the whole sedans have fallen from favour, this niche corner of the market continues to let the three-box design thrive.
The options here have changed a bit in the last few years, though, so how does the Lexus flagship, the LS fit into the picture? I drove one around for a week to find out.
This is no Lotus, but damn if it ain't a hell of a good time, and proof positive that electrification can enhance the V8 experience, rather than ruin it.
The LS500 is the least logical version of the most logical option in the ultimate luxury sedan segment in which logic doesn’t often apply at all.
Take from that what you will, but if it was me being driven around I would definitely be opting for the hybrid version of the LS instead for its smooth electrified driving characteristics and lower operating costs.
It's a mean, but somehow still sleek, looking beast, this big AMG, but it's also immediately recognisable as a thing of intent.
Up front, there's the huge vertical-slat grille that looks like it drove straight out of a Stephen King novel, a massively domed bonnet, and these vacuum-like side intakes that look like they could suck in stray animals.
Then, at the back, there are twin dual-pipe exits (for four in total), and an automatic wing that pops out of the rear bodywork. And all of that's capped off with these massive 21-inch forged alloy wheels hiding golden ceramic-composite brakes.
Mean, yes, but not quite as aggressive as you might expect the most powerful AMG to date to come across, perhaps.
Inside, it's more subdued again, with the AMG presenting a pretty passenger-friendly space, with all the Benz tech you'd imagine, including the massive screens, and — thanks to its air suspension and drive modes — the ability to tailor the ride to your liking, meaning a comfortable and premium experience, despite the power under your right foot.
The distinctive but conservative style of Lexus is on full show across the LS’s massive frame. Like other cars in its class, it’s very much the image of the brand itself with styling points strong, but to me not as impressive as the LC500, which is a definitive expression of the brand.
The LS also has many styling points of the previous-generation Lexus design language which are in the process of being phased out.
The car was only updated last year, bringing with it a more recent interpretation of the brand’s big spindle grille, pointy headlight profile, and angular but traditional rear.
The LS - even in this Sports Luxury guise - does look quite menacing from certain angles. The width and stance of this car is accentuated by its curvaceous rear guards and big square front bumper, with the elegance of a classic three-box sedan maintained in a side profile.
The chrome wheel finish is a bit much for my taste, but there’s no doubt they’re real show pieces. They’d better be, too, because I hear they are incredibly expensive should you need to replace one.
The inside has highs and lows but it’s the place where you can most tell the LS has been on sale for a while.
I love the plush seats, big screen, integrated analogue clock and three-dimensional door card design, which sell the flagship luxury feel.
But this car’s age is on show with its clunky and much maligned 'Remote Touch' pad controller (which Lexus is at long last phasing out in its new cars), last-generation software suite, and its small, crowded instrument cluster.
There are a whopping nine interior trim combinations to choose from and ours has the most recently added black leather and ‘Nishijin Haku’ themed highlights which are meant to be inspired by the way "moonlight sits on an open sea".
The feel is a bit '90s, a rough textured fabric with a silver detailing and elements clad in a thin platinum foil, making you feel like you’re in a classic high-class Japanese taxi.
But I’ll admit it plays well with the ambient lighting effect in the doors, and is a unique selling point compared to the standard leather finish.
It's not overly practical, given its size, with AMG locking in a four-seat configuration with a fixed rear pew that limits boot space. You can get folding seats, but only as part of an option package.
What you're left with is a vehicle that stretches 5054mm in length, 1953mm in width and 1447mm in height, but that serves up rear seating for only two – albeit very comfortably – and, because of the electric battery and motor being housed at the rear, boot space of just 335 litres.
There is triple-zone climate control, and the rear seating is lounge-like and luxurious, while the up-front space is ample for two full-size riders, too.
There's no spare, with AMG's 'Tirefit' puncture repair system on board.
For passengers, as you’d expect, the LS is stellar. The massive outboard rear seats offer plenty of room, and are complete with reclining, message, and cooling functions.
Adjustable vents feature, with quad-zone climate, and the screens come with individual headphone jacks and HDMI-in so you can bring with you all sorts of entertainment options for those longer journeys.
Other suitable additions worth noting include the wine cooler (although it’s a bit small for anything other than minibar-sized beverages, hardly the 007 trope of rolling out a full-size bottle of Bollinger), flip-down mirror with a light in the roof, and the touch panel controls in the armrest. I also appreciate the built-in sunshades. Nice touch.
Less impressive is the general vibe of the middle seat. With a large raised centre split in the floor and such wide and lavish outboard seats, the middle seat feels a bit forgotten.
Up front, the practicality offering includes a high level of adjustability for the seats to suit a wide range of driving positions, electrical adjust even for the steering column, and a nice wide seat which you simply sink into.
Of course, soft finishes adorn even unseen parts of the cabin so you’ll never touch a nasty hard plastic, and there are large storage areas in both the doors and centre console box.
This big armrest console also hides the USB connectivity within, and there’s a set of big cup holders with a flip-away lid if you want the wood grain design uninterrupted when they are not in use.
I have to mention the useless touchpad controller here, but hand the brand props for offering a collection of climate shortcut buttons on the dash, an actual volume knob, and truth be told you don’t need the touchpad anyway because the screen is touch. Just be ready for the matching last-generation software, which isn’t the best to use or navigate.
The boot has a volume of 440 litres which sounds plentiful, but the actual use of it is a reminder of one of the reasons SUVs are so popular.
Yes, it’s big and reasonably deep, but putting the largest CarsGuide case in there proved a bit clumsy as you have to lift it over the tall rear bumper and it only just clears the top of the relatively small opening.
I love sedans, but this is one area where you can see the benefit of a hatch opening, particularly if you were frequently doing the airport run.
There's no escaping the fact that a big number has been applied this AMG E Performance model in Australia, with the GT63S commanding $399,900, before on-road costs, and before you start selecting option packs.
Obviously performance is what you're really paying for here, but there are lots of niceties included, too.
They include an electric glass sunroof, 21-inch forged-alloy wheels with ceramic composite brakes, rear-axle steering, puddle lighting, power-closing doors (only sealing, not full hands-off closing), LED lighting, and an auto rear wing that retracts back into the body work at the rear.
Inside, there are twin 12.3-inch screens with Apple CarPlay and Android Auto, a Burmester sound system, Nappa leather seats front and back (which are heated and cooled in the front, and which offer a massage function), and three-zone climate control.
You can then spring for the 'AMG Night Package' ($3490) which adds the 'AMG Night Exterior Package', different 21-inch wheels in matt black, dark tints on the rear glass, black badging and dark chrome on the grille.
Then there's the considerably more expensive 'AMG Carbon Fibre Package' ($18,490), which gives you the carbon exterior package, carbon inserts in the side skirts, and more carbon on the front wing trim, the mirror housings, the rear wing (which is now fixed) and in the cabin.
There is more, of course, but we'll get to them under our performance, driving and safety sections.
The Lexus LS is it, the flagship sedan in the Japanese premium outfit’s line-up. It’s available in two trim levels, either the borderline aggressive F-Sport or plush Sports Luxury.
It’s also available with two drivetrain choices, with no price difference between them. The F-Sport starts from $195,953, before on-roads, while the one we’re testing here, the Sport Luxury starts from $201,078.
This pricing is below par for big luxury sedans designed to be ridden in rather than driven, making it a relatively good-value proposition straight out of the gate.
The entry-level Mercedes-Benz S-Class (the S450) starts from $243,890, the single version of the BMW 7 Series (740i M Sport) starts from $268,900, leaving only the Audi A8 (50TDI) even close when it comes to pricing, which starts from $202,700. We don’t get its Korean rival, the Genesis G90 in Australia yet.
‘Value’ or not, the LS has its work cut out for it, as this particular corner of the executive transport marketplace is probably more about badge cred than it is logic, and the 500 Sports Luxury is at a further disadvantage, as it doesn’t offer the Lexus unique selling point, a silky smooth hybrid system.
Ask yourself, when it comes down to it, if money was no object would you rather have a Grand Seiko or a Rolex?
Again, logic doesn’t apply, but the Lexus does offer pretty much everything buyers in this class should be after.
Inclusions on every LS are 20-inch alloy wheels, adaptive LED headlights, 12.3-inch multimedia touchscreen with Apple CarPlay, Android Auto, and built-in navigation, a 23-speaker Mark Levinson branded audio system, climate control with interesting ‘infra-red body temperature sensors’, heated and cooled front seats with 28-way power adjust, a heated steering wheel, full four-door keyless entry with push-button start, ambient interior lighting, a panoramic view camera, electric motion-sensing boot, radar cruise, and connected services.
Just to remind you this Sport Luxury grade is the one to be driven in, not drive yourself, unlike the F-Sport alternative it scores dual 11.6-inch rear seat entertainment touch panels with HDMI input, full quad-zone climate, power reclining for the rear outboard seats with message functions, a drop-down armrest console with a climate control panel, electric sunshades for the rear three windows, a cooler box, seat ventilation, and two additional airbags for the rear seats. Proper plush. Wish it came with a driver, too.
Things you miss out on for picking this one? Not much, the F-Sport scores a more aggressive dash, an 'LFA-Style' cluster, bolstered front seats, sport steering wheel, variable gear ratio steering with rear steering, high performance brakes, and active stabilisers.
It's not just what's under the bonnet, but what's at the rear axle, too.
But let's start at the front, shall we? Here, a familiar twin-turbo V8 engine lurks, producing a potent 470kW and 900Nm, which is fed through a nine-speed automatic, complete with paddle shifters and several drive modes, including the traction-limiting 'Race'.
But that is then joined at the rear by an electric motor with its own two-speed transmission, and which produces 70kW and 320Nm – or up to 150kW for 10-second blasts under heavy acceleration.
Combine both, and you're tapping into around 620kW and in excess of 1000Nm, enabling a sprint to 100km/h in just 2.9 seconds, and a flying top speed of 316km/h.
The LS500 packs a 3.4-litre twin-turbocharged V6 petrol engine with impressive peak outputs of 310kW/600Nm.
This engine is designed to replace a V8 in terms of its power and feel, and in a lot of ways it does.
It might surprise you to learn the only other place you’ll see this engine used in Australia is the Toyota LandCruiser 300 Series.
The alternative present in the LS500h is a hybrid version of the same engine, sans the turbos.
With its electric assistance, power outputs are lower than this turbo version, but get close with a combined total of 264kW.
While I like the walloping nature of the turbocharged V6 we drove, I think the hybrid is a no-brainer choice for reasons explained in the driving segment.
Fuel efficiency is surprisingly impressive for a vehicle this big and powerful, with Mercedes claiming 7.7L/100km and 175g/km of CO2 on the combined cycle.
Helping that is a the 6.1kW battery, which delivers just 12km in all-electric driving range, but helps reduce overall fuel use.
This AMG is AC power only, meaning you can't recharge using fast chargers, but the brand says its secret trick is its ability to recharge itself using captured kinetic energy incredibly quickly – largely negating the need to plug in unless you want to unlock that EV range – with Merc suggesting that, on a race track for example, the battery will discharge and charge itself continuously as you're lapping.
Given the angry sounds emanating from under the bonnet of this LS every time I put my foot on the accelerator, I was surprised to find overall fuel consumption for the week was surprisingly good.
I used the LS to drive mostly around town, and yet it beat its own urban claim of 14.2L/100km, settling at 12.9L.100km, closer to the combined fuel figure of 10L/100km.
The hybrid is said to nearly halve this consumption, and I’m inclined to believe it based on previous experience with Toyota/Lexus hybrid systems.
The LS500 requires at least 95RON unleaded fuel and has an 82-litre fuel tank. That means you're looking at a range of around 635km, using our real-world figure.
There's a lot of big numbers surrounding the Mercedes-AMG GT63S E Performance, but let me throw another one at you – 245km/h.
That was the high score I saw pop up on its digital speedo as the big and electrified Mercedes flew down the main straight at Sydney Motorsport Park (formerly Eastern Creek), before my courage ran out and my foot found the brake.
That kind of velocity is mind-bending in a vehicle this big, and so is the way that power is delivered, with the AMG's big brain deciding how and when to maximise power from the engine and electric motor to deliver a constant surge of torque that shoves you back, and the GT63S E Performance into the future.
But big acceleration is hardly surprising with that much power. What is a little more impressive is how easy this four-door supercar is to wrestle around a racetrack.
Sure, the feeling-out process is a little more involved, as you figure out how and when you'll feel the weight shifting, and as your brain struggles to compute how what's happening is even possible, but after a couple of laps the AMG settles into an easy, flowing rhythm that, while never feeling light on its feet, also doesn't feels like you're piloting a bus.
At least part of that is down to the wizardry on board, like the 'AMG Air Suspension', the rear-axle steering and the limited-slip diff, all of which combine to make the GT63S feel tighter and sharper than it would otherwise.
But it's also partly down to the prodigious power on offer – perfect corner entry and exits are less relevant when you have a cruise missile strapped to your right foot that doesn't just quickly make up for any driver errors, but shrinks the space between corners to the blink of an eye.
Yes, it's heavy, and there isn't much that's pure about the go-fast experience, but it left an ear-to-ear grin on my face, and isn't that priority one for any new AMG?
How does it drive on the road? That I don't know, as this was a track-only drive day. But we will get one on a proper test soon and let you know.
For a seemingly very sophisticated car, there’s something decidedly unsophisticated about the way the LS500 feels from behind the wheel.
Immediately, it feels nowhere near as cutting edge or even as special as something like the LC500, which to me becomes the truest expression of everything Lexus.
No, the LS500 in this turbo V6 guise feels a little bit too old-fashioned. It’s quiet and under acceleration feels like a V8 of just a few years ago, but the Aisin-sourced traditional torque converter automatic transmission is, dare I say, ordinary, lacking the finesse of its German rivals. It’s a problem which is easily solved. Pick the hybrid.
Elsewhere the experience is decidedly Lexus. If you’ve driven even an IS the experience is very familiar in the LS. The touchpoints all match, the steering is light and smooth with a healthy serve of electrical assistance, and, for the most part, the ride is as floaty and comfortable as you’d expect.
I say ‘for the most part’ because there are limits to what the LS’s adjustable-height air suspension will filter out on the enormous 20-inch wheels, complete with run-flat tyres.
Small bumps and potholes are dispatched with ease. Anything too large which passes a certain thud-factor will definitely be communicated to the cabin, though, making for a strange all-or-nothing ride quality.
It is impeccably silent inside, though. The engine is distant, even under load, and tyre noise is virtually non-existent thanks to specially designed alloy wheels with hollow chambers designed to minimise this effect. Now that’s more like what I expect from a Lexus.
It handles very well for such a big unit, making it at least decent to drive for the few buyers who will actually take the helm themselves.
This is no land yacht, it’s a surprisingly agile and adept machine when faced with a bit of blacktop. And it's here where the turbocharged V6 comes into its own compared to the hybrid, offering superior driver engagement.
The GT63S E Performance is yet to be crash-tested (probably something about each one costing about the same as small apartment), but it does come pretty comprehensively loaded with safety kit.
That includes the standard 'Driving Assistance Package Plus', which delivers active cruise control, AEB, 'Active Steering Assist', 'Active Lane Change Assist' and nine airbags.
This Sports Luxury version of the LS500 has everything and then some. The usual key highlights are included: high-speed radar based auto emergency braking with pedestrian and cyclist detection as well as intersection assist and fully adaptive cruise control, lane keep assist with lane departure warning, blind spot monitoring with rear cross traffic alert, rear auto braking, traffic sign assist, adaptive headlights, and a panoramic parking camera.
Specific to the Sports Luxury is two additional rear airbags for a total of 12. Despite this thorough suite of equipment, the LS has not been tested by ANCAP.
The GT63S E Performance is covered by Mercedes' five-year, unlimited-kilometre warranty, and you can pre-pay your service costs to keep the prices down.
Service pricing for the electrified model is yet to be confirmed.
Lexus offers a five-year and unlimited kilometre warranty, and LX buyers get three years of complimentary membership to the brand’s ‘Encore Platinum’ owner experience, which includes three years of capped price servicing, free loan cars at the time of service, invites to events, discounts on fuel at Ampol outlets, and four uses of ‘Lexus On Demand’ which lets owners swap into another Lexus model for up to eight days at a time, as well as eight free uses of valet parking at certain locations.
Servicing on the LS occurs once every 12 months or 15,000km and is fixed for the first three years at $595. Very cheap for the space it plays in.