Mercedes-Benz has detailed its 48-volt mild hybrid system for 2018 E-Class coupe and cabriolet models.
Available on only the flagship E350, the new 48-volt belt driven alternator and battery system is capable of augmenting engine power and allows the motor to switch off more often, increasing fuel economy.
The system cannot be fitted to current engines available in the range and sees a new M264 2.0-litre four-cylinder turbocharged engine introduced that produces 220kW of power and 400Nm of torque. The 48-volt alternator adds 10kW and 150Nm of power at engine speeds up to 2500rpm.
The 48-volt setup is four times more powerful than regular 12-volt systems but doesn’t require additional safety mechanisms for added oomph. Joining the alternator and battery is a 48-volt water pump and possibility of additional in-car entertainment systems.
The more robust stop/start generator, with a smoother crank, also allows the engine to shut off when not required such as when coasting or stopping for traffic. On braking, the alternator recuperates up to 12kW/h.
A similar system was showcased for the upcoming Audi A8 and 2019 A7.
Mated to the engine is a 9-speed automatic transmission and rear-wheel drive layout helping the E350 pair sprint 0-100km/h in 5.9 seconds and to a top speed of 250km/h. The E350 coupe achieves a fuel consumption of 6.7L/100km while the heavier E350 cabriolet returns 6.8L/100km (combined-cycle).
A new E220d joins the E-Class coupe and cabriolet range and is powered by a 2.0-litre four-cylinder turbocharged diesel engine producing 143kW and 400Nm. It is the most frugal of the range and sips 4.8L/100km.
Along with new engines for the E-Class are more paint colours, trim bits, Mercedes’ ‘Energizing’ comfort control and a Night package for cabriolet models
The Night package adds AMG front apron, diamond grille, high-gloss black trim, and bespoke 18-inch, 19-inch or 20-inch AMG alloys depending on trim level.
Technology upgrades for the range include comfort connectivity, SMS notification when parking damage occurs and a wellness and fitness program utilising the climate control, ambience lighting, massage and fragrance options. An in-car office assistance sends updates and locations from connected apps like calendar to the cars infotainment system for navigation, calls and reminders.
The new E-Class has been announced with pricing and specification for Europe only so far.