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Meet the AMG GT’s 503bhp 4.0-litre V8 biturbo

The Mercedes-Benz drip-feed of information for the AMG GT is still, erm, dripping. Only this time we have something juicy to look at in the form of details of its new AMG engine.

The Mercedes-AMG GT will be powered by a 4.0-litre V8 biturbo that weighs 209kg, making it one of the lightest engines of its kind. Two turbochargers sit inside the V configuration, as opposed to outside the cylinder banks, in what is known as ‘hot inside V’.

Engine porn
Engine porn

This new turbo arrangement helps the engine to be smaller and spew out less exhaust emission, helping it meet Euro 6 emissions that come into effect in 2016. It also helps with balancing out weight distribution between the front and rear axle.

What you really want to know, of course, are the power details. Total output is 510hp (503bhp), with torque at 650Nm from just 1,750rpm. That works out at an impressive 163.2Nm and 128hp per litre. The revs top out at 7,200rpm, while fuel economy is said to be 28.8mpg.

Mercedes-Benz says the new V8 biturbo closely resembles the four-cylinder AMG 2.0-litre turbo you find in the A 45 AMG, CLA 45 AMG and GLA 45 AMG, including the same bore/stroke ratio and ‘high-revving’ ability.

The new engine will be partnered up with a new sports exhaust system with ‘fully variable’ flaps. At lower speeds the flaps remain shut so the engine note is tame. As the revs pick up the flaps open, enhancing the sound until you really gun it, at which point they are fully open.

The “one man, one engine” mantra will apply to the new V8 biturbo, like with other AMG lumps. So you can rest easy knowing your AMG GT was painstakingly built to perfection, as an engine plate unique to each engine will attest.

Expect the AMG GT to be considerably more affordable than, say, an SLS and SLS GT. Alleged rivals include the Porsche 911, Jaguar F-Type and Lexus RC F.

Internet reports say the big AMG GT unveiling will be on September 9th, 2014, ahead of its public debut at the 2014 Paris Motor Show. Until then, check out the teaser video below and feast your ears on that gloriously grumbly engine note.

Mercedes-AMG GT V8 biturbo pictures

The Mercedes-AMG GT video

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