When comparing the fuel consumption of the Mercedes-Benz C180 and C200, both models use similar 4-cylinder engines but differ slightly in output and efficiency due to power differences and tuning.
The C180 BlueEFFICIENCY is rated at 115 kW (156 hp) with a peak torque of 250 Nm, while the C200 BlueEFFICIENCY delivers 135 kW (184 hp) and 270 Nm of torque[3].
On the W205 generation C180, fuel consumption is as low as 5.0 liters per 100 km (combined) with the manual, or 5.4 liters per 100 km with the 7G-Tronic Plus automatic. In comparison, the older W204 C180 consumes around 5.8 liters per 100 km (combined)[1]. The newer BlueEFFICIENCY and turbocharged engines improve economy compared to earlier Kompressor models[3].
For the C200, official figures also indicate moderate fuel consumption increases compared to the C180, reflecting the jump in power. Expect the C200 BlueEFFICIENCY to average around 0.5 to 0.8 liters per 100 km higher than the equivalent C180, meaning real-world combined economy is often reported between 5.5 to 6.3 liters per 100 km under similar driving conditions[3].
- C180 BlueEFFICIENCY: 5.0–5.4 liters/100 km (combined, depending on transmission and model year)[1]
- C200 BlueEFFICIENCY: approximately 5.5–6.3 liters/100 km (combined)[3]
Both models prioritize efficiency: the C180 is slightly more economical while the C200 offers increased power for a marginal increase in consumption.