Posaiden create monster Mercedes-AMG E63 RS850+

Posaiden create monster Mercedes-AMG E63 RS850+

Mercedes’ new E Class breaks cover this month, but we’ll still have to wait at least a year before we get to see anything that looks, sounds or goes like a new Mercedes E63.

It sounds like it’ll be well worth the wait, though; word around the campfire is that it’ll be all-wheel-drive, equipped with electronically controlled torque vectoring diffs front and rear and score a significant jump in power.

How significant, you ask? Merc high-ups suggest that the power output should be in line with the capabilities of the new chassis set-up, so a jump from the current 375kW to a figure more like 440kW isn’t unreasonable to expect.

Posaiden Mercedes-AMG E63 RS850+ rearIn the meantime, though, German tuners Posaiden have taken a current E63 4matic and created what it awkwardly calls the RS850+.

We’re not sure why it’s called that – it’s pumping out a vaguely ridiculous 740kW and a mind-bending 1399Nm, so 850 really doesn’t come into it.

Anyway… a pair of larger turbos and more efficient intercoolers, along with a handmade exhaust, uprated fuelling and an ECU retune takes care of the extra mumbo, giving the E63 to a 0-100km/h of 2.8sec and a limited top speed of 350km/h. Apparently it’ll do 370km/h…

Posaiden Mercedes-AMG E63 engineThe drivetrain has been beefed up to take the extra grunt, while new forged 20-inch rims run 255/30R20 front and 295/25R20 rear tyres. The wheels cover 420mm carbon ceramic rotors and six-piston calipers up front and 360mm units with four-potters out back. It’s all tied down with height-adjustable coilovers.

Posaiden has also gone slightly nutty with the interior, ditching the back seat entirely and bolting in a set of fixed-back seats from the Merc C63 Black. To be honest, it looks like a work in progress. That, or someone likes the unfinished look.

Posaiden Mercedes-AMG E63 bonnetA carbon bonnet, rear spoiler, splitter and mirror caps are offset by a gaping mesh mouth where the E63’s grille used to be.

Bless the Germans.

We're giving away the last great Aussie Holden V8! Enter here for your chance to win!

Get your free weekly report from the world of fast cars - subscribe to the MOTOR newsletter!