The long-awaited Black Series version of Mercedes-AMG’s GT sports car packs the most powerful series-production V8 engine that AMG has yet made.
The GT Black Series’ twin-turbocharged 4.0-litre V8 puts out 720bhp and 590lb ft of torque. That’s 143bhp and 74lb ft more than the next-fastest variant, the GT R Pro. The Black Series’ V8 has been modified so extensively from the existing unit that it has been given its own engine code.
The new engine features a racing-spec flat-plane crankshaft, unlike the regular versions. Its altered cylinder firing order provides improved throttle response, the ability to rev more cleanly at higher revs and more power. The distinctive engine sound has been heard in an official video. New camshafts, bigger turbos mounted on anti-friction bearings, a beefier intercooler and an uprated exhaust system all reap the benefits of the new layout.
The result is a claimed 0-62mph time of 3.2sec, 0-124mph in 9.0sec and a top speed of 202mph. Power is put through the rear wheels only via a seven-speed dual-clutch automatic gearbox, itself modified for better shift response and with altered ratios. It combines with a revised Race Start function, promising even more impressive launches.
The motorsport theme is apparent in the exterior appearance of the GT Black Series, which looks much like one of Mercedes’ GT3 or GT4 racing cars. At the front, a larger air intake combines with airflow-optimising ‘flics’, a two-stage manually adjustable carbonfibre splitter and a carbonfibre bonnet with downforce-boosting exhaust air openings and cooling slats.
Wider sill panels contain brake cooling ducts, while a rear diffuser and huge two-piece spoiler feature. The latter features flaps which can adjust by up to 20 degrees to reduce air resistance or improve stability depending on the driving situation. Combined with an almost fully flat underbody, the aero measures give the car claimed downforce of 400kg at 155mph.
Among the multiple driving mode settings (which also include a nine-mode traction control system) is a new function in Sport Plus that can detect the race track surface and set the car up accordingly. The camber is also manually adjustable, while AMG has worked with Michelin to develop a specific Pilot Sport Cup 2 tyre with soft and hard compound options.
Inside, the GT Black Series gains a unique interior spec that mixes leather and microfibre with black and orange stitching and matt black carbonfibre trim. Weight-saving door panels with loop pull handles also feature. Options include carbonfibre bucket seats and the AMG Track Package, which adds titanium rollover protection, four-point belts and a fire extinguisher.
Autocar understands the GT Black Series will be priced at about £330,000 – more than three times the cost of the base GT and £140,000 more than the current range-topping GT R Pro. It will be available to order at the end of this month, with first deliveries in the autumn.