Mercedes will launch a revised C-class with a super-frugal 1.6-litre petrol engine in late summer, according to company sources. The new four-cylinder turbocharged engine, dubbed M274, is the longitudinally mounted version of the M270 engine that is also making its debut in the new A-class.
The engine, which features Mercedes’ new Camtronic two-stage variable valve lift, is expected to come in two forms with the same 1595cc capacity. Figures for the C-class haven’t been revealed, but in the A-class the new engine comes in 121bhp and 154bhp versions, producing 128g/km and 129g/km of CO2 respectively.
There is also a 1991cc version of the engine, which is good for 208bhp and 143g/km. Pollution levels are so low that it meets 2015’s stringent Euro 6 emissions regulations.
The company says the engine benefits from three key Mercedes BlueDirect technologies in addition to Camtronic: piezo injectors, multi-spark ignition and a turbocharging system that uses ‘scavenging’ to reduce turbo lag to an absolute minimum. It also has balancer shafts, variable-rate water and oil pumps, low-friction internals and automatic stop-start.