Mercedes E Class Coupe and Cabrio debut new smart engine image

The new 2.0-liter gasoline engine residing inside Mercedes-Benzes E350 models is now available with 48 V technology, among others, looking to bridge the gap between petrol and diesel.

Mercedes’ new M 264 engine is making its debut inside the two-door E-Class models, with the four-cylinder unit sporting twin-scroll turbochargers and a “sporty specific output” of 299 horsepower (220 kilowatts) from 5,800 rpm and a maximum torque of 295 pound-feet (400 Newton-meters) available from 3,000 rpm. Setting it apart from the run of the mill four-cylinder 2.0-liter is the use of 48 V technology, with starter-alternator and an electric 48 V water pump. There’s also a boost function up to 2,500 rpm that gives an additional 14 hp (10 kW) and 110 lb-ft (150 Nm) thanks to the “EQ Boost”-branded starter-alternator.

Respecting its logo, Mercedes also makes promises of “almost imperceptible,” engine startups, while the new unit can be switched every time power isn’t needed – decelerations and coasting, so for the coupe the average rating is of 6.7 liters / 100 km in the combined cycle and 149 g/km of CO2 while the Cabriolet is heavier and needs 6.8 liters with emissions of 154 g/km. Both E350 models are equipped with a nine-speed automatic transmission and share an electronic speed guard for a max speed of 155 mph (250 kph) – with the sprint to 62 mph (100 kph) resolved by the coupe in 5.9 seconds whereas the droptop needs another 0.2 seconds. Prices in Germany kick off from €59,738 for the coupe and €65,212 for the cabriolet.