New Mercedes C-Class Models Feature Gasoline Direct Injection with 6-Speed MT, Start/Stop Systems

Mercedes-Benz is introducing C-Class C 180 CGI BlueEFFICIENCY and C 200 CGI BlueEFFICIENCY models featuring four-cylinder gasoline direct injection engines with ECO start/stop function, coupled to a six-speed manual transmission. Fuel consumption and CO₂ emissions are up to 10% lower than their outgoing counterparts. Previously the four-cylinder gasoline engine with direct injection was only available for C-Class models equipped with an automatic transmission.

A new C 220 CDI BlueEFFICIENCY will likewise feature the ECO start/stop function and a six-speed manual transmission, resulting in fuel consumption of 4.4 liters of fuel per 100 kilometers (53.5 mpg US)—0.4 liters lower than the previous figure. CO₂ emissions drop from 127 g/km to 117 g/km. The new C 220 CDI BlueEFFICIENCY with ECO start/stop function is the most fuel-efficient C-Class yet.

Another new addition to the line-up is the C 250 CDI 4MATIC BlueEFFICIENCY, which combines the powerful and economical four-cylinder diesel engine with four-wheel drive for the first time.

Compared to conventional port injection, gasoline direct fuel injection allows higher
compression and thus improved thermodynamic efficiency. Offering the same power output as the outgoing models, the four-cylinder engines with direct injection deliver with their higher torque.

The new C 200 CGI BlueEFFICIENCY model has a displacement of 1.8 liters and an output of 135 kW (184 hp), with fuel consumption of 6.8 liters of premium unleaded gasoline per 100 kilometers (34.6 mpg US) (combined NEDC consumption)—around 0.8 liters (10%) less than the previous four-cylinder engine with conventional fuel injection and a supercharger.

CO₂ emissions from the direct-injection model with a manual transmission are 158 grams per kilometer (12% lower than previously). Despite the lower fuel consumption, the peak torque has been increased from 250 N·m to 270 N·m (199 lb-ft), enabling the new C 200 CGI to accelerate from 0 to 100 km/h in 8.2 seconds (outgoing model 8.6 seconds).

In the C 180 CGI BlueEFFICIENCY, the direct-injection gasoline engine develops 115 kW (156 hp) and, with its higher peak torque of 250 N·m (184 lb-ft) (outgoing model 230 N·m), the version with manual transmission is half a second quicker from 0 to 100 km/h (9.0 seconds).

In the C 180 CGI BlueEFFICIENCY and C 200 CGI BlueEFFICIENCY models, a new ECO start/stop function in conjunction with a six-speed manual transmission helps to reduce fuel consumption. The engine is stopped automatically as soon as its speed falls below 8 km/h (5 mph), and once the driver has applied the brakes and moved the gear lever to neutral. The engine starts again immediately when the driver presses the accelerator or clutch pedal. Availability of the ECO start/stop function is indicated on the instrument cluster.

This effective ECO start/stop function likewise features in the new Mercedes-Benz C 220 CDI BlueEFFICIENCY model with a six-speed manual transmission, which
has a displacement of 2,143 cc, an output of 125 kW (170 hp) and a peak torque of 400 N·m (295 lb-ft), allowing the sedan to accelerate from 0 to 100 km/h in 8.4 seconds.

Another new addition to the line-up is the C 250 CDI 4MATIC BlueEFFICIENCY, which for the first time combines the four-cylinder diesel engine developing 150 kW (204 hp) and a peak torque of 500 N·m (369 lb-ft) with the 4MATIC four-wheel-drive system. The C 250 CDI 4MATIC BlueEFFICIENCY is equipped with a seven-speed automatic transmission as standard.