Both A180 CDI SE and B180 CDI SE manual variants will be replaced by the new ECO SE economy models. The A180 CDI ECO SE offers a claimed average of 78.5mpg and CO2 emissions of 92g/km, compared to 74.3mpg and 98g/km of CO2 for the outgoing model.
The Mercedes B180 CDI ECO SE benefits from similar improvements, offering 74.3mpg and 98g/km of CO2 as opposed to the 68.9mpg and 108g/km of CO2 of the car it replaces.
Consequently both are now free to tax, as opposed to just the A-class, and benefit from low company car tax bands.
The ECO SE models, which will become available in January 2014, feature aerodynamic improvements, weight-saving measures and powertrain tweaks in order to boost their efficiency without compromising performance. Mercedes claims that for both models the power, torque, top speed and acceleration is unchanged.