Bentley Mulsanne SpeedBentley has revealed the new Mulsanne Speed – a four-door luxury limo that packs a 537hp 6.75-litre twin-turbo V8 producing a monumental 811 lb ft of torque.

Such staggering pulling power means the new Speed version of the Mulsanne luxury saloon has the same torque figure as the Koenigsegg Agera R supercar…

It helps the mighty 2.7-tonne Bentley accelerate from 0-62mph in 4.9 seconds and go on to 190mph. It’s no wonder Bentley’s fitted enormous 400mm front disc brakes to the hot new version of the Mulsanne, which debuts at the Paris Motor Show 2014 on 2 October.

But what’s equally impressive is fuel economy. No, 19.3mpg isn’t going to win any efficiency plaudits, and 342g/km CO2 is still one of the highest of any production car on the planet… but it’s also a 13 per cent improvement on the standard Mulsanne, duly extending the car’s tank range by 50 miles (and it’s this, rather than the heft of fuel bills themselves, that Bentley owners rate fuel consumption by…).

The upgraded engine is also now EU6 and US LEV III emissions-compliant, so tailpipe emissions are among the cleanest on the planet.

As for handling, Bentley has developed a new Sport suspension mode for the Mulsanne Speed’s air suspension. This improves body control and, it says, adjusts the steering to make it crisper and more accurate.

How to spot a Bentley Mulsanne Speed

How, apart from the speed, will you spot a Mulsanne Speed? From its dark-tinted stainless steel grilles, dark-tint headlights and tail lights plus 21-inch wheels that, for the first time in Bentley’s history, are directional. Naturally, they’re dark-tinted.

There are four new colours as well: Candy Red and Carmel are conventional, while Marlin is a rich blue with a hint of green and Spectre is a deep black with a heavy gold metallic and a hint of green. Solid polished stainless steel Speed badges are fitted to the front wings.

Inside, there’s a Speed-unique two-tone colour split and ‘technical’ veneer with Piano Black and carbon fibre.

Bentley Motors Chairman and Chief Executive Wolfgang Dürheimer said: “The new Mulsanne Speed is the car that defines Bentley, as a flagship for driving luxury performance. Our customers don’t compromise, and we’ve adopted the same approach in the design, engineering and crafting of our new flagship.

“The Mulsanne Speed is distinguished, calm and relaxing, but always with a connection to the road and relentless dynamic performance on demand. In this car, every journey becomes a drive.”

The Mulsanne Speed will be unveiled at the Paris Motor Show on Thursday 2nd October, and will be available for customer delivery this winter.

But if such dramatic pace isn’t for you, fear not: the regular Mulsanne has also been upgraded for the 2015 model year. It now produces 512hp and 752lb ft of torque, and also consumes 13 per cent less fuel. The regular Mulsanne gets the upgraded automatic gearbox software of the Mulsanne Speed as well, which gives smoother gearchanges and better response.

The new Bentley Mulsanne Speed will be revealed on 2 October at the Paris Motor Show 2014; price details will follow and deliveries will begin this winter.