The Mercedes S500 plug-in hybrid is the latest model in the S-Class line-up, and it has been revealed ahead of its Frankfurt Motorshow Debut.
Fitted with a 329bhp 3.0-litre V6 turbocharged engine, which is paired with an 80-kW electric motor, the S500 hybrid will return 94.2mpg and emit only 69g/km of CO2. It is also capable of covering up to 18 miles purely on electric power alone.
The combination of the powerful petrol engine and electric motor means a high combined torque figure of well over 650Nm. The sprint from 0-62mph is achieved in 5.5 seconds and the top speed is electronically limited to 155mph.
The S500 hybrid joins the S400 and S300 BlueTEC in the S-Class hybrid range but Mercedes claims the S500’s batteries have ten times the storage capacity. The batteries in the S500 also have the advantage of being able to be topped externally using the charging socket hidden in the rear bumper.
The driver can also select from four hybrid operating modes including, normal hybrid, electric power only, electric power save and driving charging modes. Other features of the S500 include a regenerative braking system and engine deactivation anytime the vehicle is coasting, both of these features help to recharge the lithium-ion batteries.
Discussing the maufacturer's hybrid and electric future, Mercedes chief, Dieter Zetsche, claimed that going green was no longer just a marketing tool. And that it goes towards the maker's aims for its cars being emission- and accident-free in the future.
An anticipatory energy management system is also fitted to the S500, which uses the onboard navigation system to prepare the car for the next five miles of driving. Mercedes says it will increase efficiency, as the car will know it can use the energy stored in the batteries ahead of a downhill stretch of road knowing the batteries can be recharged on the way down.
There's still no indication yet on the price for the S500 Hybrid but it will arrive in the UK next September.