Electric Rolls-Royce Spectre to be new-age Phantom coupe

However, Rolls-Royce director of engineering Mihiar Ayoubi offered lots of insight into the wider technical development of the Spectre and its early progress. The battery, for example, plays a key role in the overall package. It is completely flat underneath to allow for a smooth floor to improve aerodynamic efficiency. The battery’s mounting also enables better weight distribution front to rear for improved ride comfort and handling, and a low centre of gravity. In addition, it has acoustic benefits, allowing Rolls-Royce to use less than the 120kg of soundproofing found in the Phantom.

Rolls-Royce has confirmed that the car will ride on 23in wheels in production, the largest fitted to a coupé since the 1926 Bugatti Royale, and that it will adopt a twin-motor set-up with one sited on each axle for four-wheel drive.

Familiar chassis technology from other Rolls-Royce models, including the rear-wheel steering and active anti-roll systems, are carried over, too. In terms of styling, the split headlight design of the Phantom Coupé will return on the Spectre.

Ayoubi said the initial development at the firm’s test site in Arjeplog, Sweden, was to first ensure the prototypes function as expected and then set the parameters for the tests to come. “The car has only just learned to walk,” he said.

In this early development (the Spectre mule we saw was just 25% representative of a finished production example), The new Spectre will have a 700kg battery mounted in a flat floor much of the work is ensuring the basic components – such as the windows, doors, heating and cooling, and rubber seals – work as they should in an extreme environment. But “as silence is luxury”, said Ayoubi, “they need to not only perform in these conditions but perform silently”.

Also ongoing was the start of the development of the car’s new “electric backbone”, said Ayoubi, which contributes to the Spectre being “the most connected Rolls-Royce ever”. Although there are fewer mechanical parts than in one of the firm’s V12 models, there is a huge increase in intelligent electrical systems that are interconnected and controlled by this electric backbone. In total, there are 7000 metres of cabling in the car, whereas a regular premium car will have around 2000 metres.

“We have highly integrated hardware with software intelligence,” said Ayoubi. “The systems are intelligent now. We have multi-channel, multi-control systems and we have developed algorithms to harmonise the work of these competing systems

“We have 25 times more algorithms in this car. There are 1000 high-level functions with up to 25,000 sub-functions. There are 141,200 send and receive functions in this car, each with a tolerance of 25 milliseconds and they should not fail.” This is known as ‘RollsRoyce 3.0’ and refers to the firm’s new way of developing cars in its upcoming electric era.

Development will soon end in Arjeplog and move on to high-speed testing at the Miramas test facility in France and hot weather testing in Dubai and southern Europe, as well as at the firm’s engineering base in Munich and its Goodwood headquarters. Testing will return to Arjeplog at the end of the year “to see how much the prototypes have learned”, said Ayoubi.

In total, some 2.5 million kilometres (about 1.55 million miles) of testing will be done and more than 30 prototypes will be built.

As for early sales success, Müller-Ötvös said Rolls-Royce is already taking orders and deposits for the Spectre, including from people who are new to the brand. The firm forges close relationships with its customers and has consulted with them on its plans to make an electric car since as far back as the 102EX concept of 2010, an all-electric Phantom that customers were able to test.

Rolls-Royce’s silent factor