Complete technical specifications for the Mercedes-Benz E-Class E 250 BlueEFFICIENCY Cabriolet — 204 hp, petrol, convertible, 2011. Performance highlights: 0–100 km/h in 7.8 s, top speed 240 km/h (149 mph), consumption 6.7 l/100km (42.2 mpg UK · 35.1 mpg US).