Complete technical specifications for the Mercedes-Benz C-Class C 250 CDI BlueEFFICIENCY Elegance — 204 hp, diesel, sedan, 2009. Performance highlights: 0–100 km/h in 7.0 s, top speed 240 km/h (149 mph), consumption 5.1 l/100km (55.4 mpg UK · 46.1 mpg US).