The A-class and B-class Mercedes-Benz range is now broader with the addition of new 'ECO SE' and all-wheel-drive variants that offer impressive fuel economy. The new ECO SE economy models will replace the A180 CDI SE and B180 CDI SE manual variants. Mercedes claims that the A180 CDI ECO SE has an average of 78.5mpg and CO2 emissions of 92g/km.
Meanwhile, the outgoing model returns 74.3mpg and emits 98g/km of CO2. The same improvements were applied to the Mercedes B180 CDI ECO SE, with 74.3mpg and 98g/km of CO2. Meanwhile, the outgoing model returns 68.9mpg and emits 108g/km of CO2. As a result, both are now free to tax, as opposed to only the A-class.
They also benefit from low company car tax bands. Set to become available in January 2014, the ECO SE models received aerodynamic enhancements, some weight-saving measures and powertrain modifications so that it will become more efficient without sacrificing performance. Mercedes said that the power, torque, top speed and acceleration figures of both models are unchanged.
The range will also have new '4MATIC' all-wheel-drive editions of the A-class and B-class. In addition, this system will be available on A250 models, in AMG Sport and Engineered by AMG trims, and on the B220 exclusively in Sport trim. The system, which was introduced in the Mercedes-Benz CLA, sends torque between the front and rear axles through an electro-hydraulically controlled multi-disc clutch unit.
It operates automatically and, when needed, it can distribute up to 50% of the power to the rear wheels. The new Mercedes A180 CDI ECO SE and B180 CDI ECO SE have starting prices of £21,965 and £22,950 respectively. Meanwhile, the all-wheel-drive versions of the A250 4MATIC have a starting price of £28,985. Meanwhile, the B220 4MATIC is priced from £28,135.