The revised Mercedes-Benz S-class introduces a new range of in-line six-cylinder engines – the first for the German car maker since it adopted V6 units back in 1997.
The new in-line engines, which are set to find their way into other models, share their architecture with Mercedes’ existing range of four-cylinder engines and are planned to be introduced in diesel form first when UK sales of the updated S-class get underway later this year.
The heavily related petrol unit, which comes combined with a new 48-volt electric system that allows it to run both an electric booster compressor an integrated starter generator as part of a mild hybrid drivetrain strategy aimed at netting greater performance and reduced fuel consumption, is then set to follow in 2018, according to Mercedes.
The line-up – yet to be confirmed for the UK - includes the S350d and S400d which both use the turbocharged 3.0-litre in-line six-cylinder diesel engine in two states of tune, and develop 207bhp and 336bhp respectively.
Also included in the launch line-up for the facelifted S-class is the S560 – a model which resurrects one of the most revered model designations ever used by Mercedes-Benz. It will use the twin-turbocharged 4.0-litre V8 petrol used in the existing S500.
There will also be a S560e, which will replace the current S500e, which runs the turbocharged 3.0-litre in-line six-cylinder petrol engine with an electric booster compressor and an electric motor in combination with a 48 volt electric system.
Further up the line-up, the updated S63 eschews the twin-turbocharged 5.5-litre V8 petrol engine of its predecessor for the most powerful iteration of AMG’s twin-turbocharged 4.0-litre V8 powerplant. Power has increased by 26bhp to 612bhp, with torque remaining the same as previously at 663lb ft.
The performance saloon is set to hit 62mph from standstill in just 3.5sec, beating its predecessor by 0.5sec.