AMG’s hybrid 2+2 leverages a stupefying quantity of know-how to defy the legal guidelines of physics.
Within the days main as much as my seat time within the GT63 S E Efficiency – AMG’s hybridized riff on the just lately reinvented two-door GT – I discovered myself pondering precisely what this automobile’s major intent is. Whereas the unique Mercedes-AMG GT was a rear-wheel drive two-seater that was expressly designed to go up towards the 911s and Corvettes of the sportscar world, very like the SLS AMG earlier than it, the second-generation GT is a distinct animal.
Now underpinned by a platform shared with the SL, the GT has gained a rear seat, an extended wheelbase, all-wheel drive (apart from the bottom GT 43 mannequin, which stays rear-drive), and quite a lot of kilos of heft within the course of. Whereas the first-generation GT S coupe weighed in at round 3,600 kilos, its modern equal (the non-hybrid Mercedes-AMG GT 63) ideas the scales at over 4,300 lbs., and this E Efficiency mannequin brings roughly 500 kilos extra to the combination, largely as a result of addition of an electrical motor and a 6.1 kWh battery pack.
May a car that’s almost 5,000 kilos someway nonetheless be thought-about a sportscar? And if not, then what’s it? Even after every week with the automobile, I’m nonetheless not fairly sure, however what I can say for certain is that this: It appears to be like nice, it’s stunningly advanced, and it’s quick as hell.
Reality be advised, the Mercedes-AMG GT63 S E Efficiency is finally a succesful and decidedly performance-oriented luxurious grand tourer within the vein of the Aston Martin DB12 and the 992 Porsche 911 Turbo S, but it out-muscles each of these machines whereas undercutting them on worth.
Below the hood is AMG’s venerable 4.0-liter twin-turbocharged V8, right here tuned to ship a wholesome 603 horsepower and 627 lb-ft all by itself. The engine can be supplemented by the aforementioned electrical motor, which produces 201 hp and 236 lb-ft of torque, leading to an official mixed system whole of 805 horsepower and a jaw-dropping 1,047 pound-feet of torque.
If that math has you scratching your head, you’re not the one one. Mercedes says that reasonably than merely combining the height output numbers of the engine and the hybrid system to get the output whole, it must be thought-about as one entire powertrain, and that requires a calculation which might trigger Isaac Newton’s eyes to glaze over. The fundamental premise is that this components takes the gearing of the automobile’s two transmissions into consideration (the standard nine-speed automated and the hybrid system’s personal two-speed gearbox) to find out correct figures “on the crank.”
I gained’t bore you with the specifics right here, however suffice to say this powertrain is a sophisticated piece of know-how. It additionally makes the GT63 S E Efficiency essentially the most highly effective collection manufacturing mannequin in AMG’s lineup alongside its drop-top stablemate, the SL63 S E Efficiency, which is outfitted with the identical powertrain {hardware}.
As with different performance-focused hybrids just like the BMW M5 and the Lamborghini Revuelto, a press of the engine begin/cease button will get issues underway purely on electrical energy, giving the GT63 S E Efficiency a component of stealth that your neighbors will probably admire on early morning treks out. Though the hybrid system’s battery pack solely affords about eight miles of electrical vary, the automobile’s sportier drive modes will high off the battery as you drive, so homeowners will hardly ever have to trouble plugging right into a charger.
Sadly, the rear-mounted hybrid system does create a large hump within the automobile’s storage compartment, in flip decreasing cargo capability from the 11.3 cu ft present in different GT fashions to simply 7.3 cubic ft.
The GT63 S E Efficiency affords eight drive modes in whole – Electrical, Battery Maintain, Consolation, Slippery, Sport, Sport+, Race, and Particular person. Consolation is the default setting when the automobile is began, and whereas the hybrid system can deliver the automobile as much as freeway speeds completely beneath electrical energy, the V8 is robotically woke up in case you’re confronted with a steep hill or want extra punch than the electrical motor can present.
The transition from purely electrical energy to a mixture of electrical and inner combustion propulsion is admirably seamless from behind the wheel, although; on a couple of event, I needed to look on the tachometer to confirm whether or not or not the V8 had kicked in. For this, I blame the completely killer Burmester “3D Encompass Sound” audio system!
Regardless of the automobile’s performance-focused tuning, poundage, and this tester’s non-obligatory 21-inch wheels, it’s additionally remarkably compliant on the freeway and never particularly harsh round city when left in certainly one of its extra relaxed drive modes. A lot of the credit score for this feat should be awarded to AMG’s Lively Journey Management suspension, which is commonplace gear on the GT63 S E Efficiency.
It options an energetic hydraulic system that replaces typical sway bars and assists the automobile’s adaptive dampers individually throughout each the compression and rebound actions of the suspension. This pays dividends in on a regular basis driving consolation whereas additionally serving to to keep up correct camber within the corners throughout extra spirited drives.
Talking of spirited drives, the cognitive dissonance solely acquired stronger once I ventured out to the canyons. Whereas the automobile’s substantial mass makes itself recognized beneath braking and when shortly altering path, the suspension does a powerful job of corralling physique movement. There’s additionally a shocking quantity of mechanical grip on faucet, and the all-wheel drive system permits for loads of tail-out antics in case you’re feeling courageous sufficient to dial again among the digital help.
Mercedes claims an official 0-60 mph dash of two.7 seconds, making this the quickest AMG street automobile produced so far. I see no purpose to refute that declare, however outdoors the context of drag launches, the GT63 S E Efficiency does seem to be it will profit from some further dynamic refinement.
It takes a noticeable beat after a stab of the loud pedal for the entire varied methods to get on the identical web page to ship most thrust, and by the point they’re all on full assault, you’re typically again on the brakes for the subsequent nook. And whereas the transmission programming in Race mode is appropriately aggressive, the gearbox tends to be a bit lazy about responding to downshift requests from the paddle. Pedal really feel beneath exhausting braking was additionally oddly inconsistent, whatever the drive mode or regen setting that was chosen, which is a bit disconcerting in a automobile that’s this heavy and this fast.
Regardless of its quirks, there’s no query that the GT63 S E Efficiency is thrilling to drive when the going will get quick and extremely competent when pressed into service as a grand tourer. Whether or not or not it’s a real sports activities automobile stays up for debate, however most homeowners most likely gained’t be too involved about that after they pull up subsequent to a McLaren Artura at a stoplight with an air of confidence.
Pictures: Bradley Iger
