Looking significantly improved, the 2013 A-Class has swoopy styling, advanced engines and a high-tech interior.

Mercedes has officially unveiled the all new 2013 A-Class.

Looking significantly improved, the car adopts swoopy styling that was previewed by the A-Class concept. The overall design is relatively sporty and it helps to give the model an impressive 0.26 drag co-efficient.

Three different variants will be offered - Urban, Style and AMG Sport - and the latter model features red styling accents, a unique front axle, a revised suspension and exclusive 18-inch five-spoke alloy wheels.

Inside, the cabin has high quality materials and an advanced design. Notable highlights include circular air vents, a free-standing COMAND display and electroplated "silver chrome" accents.

Under the hood, a variety of different engines are available. On the petrol side, there's 1.6- and 2.0-liter units with outputs ranging from 115 PS (85 kW / 113 hp) in the A 180, 156 PS (115 kW / 154 hp) in the A 200 and 211 PS (155 kW / 208 hp) in the A 250. Interestingly, the 1.6-liter engine features a new CAMTRONIC system which adjusts the "valve lift on the intake side [which] restricts the amount of fresh mixture used in the partial load range" for reduced fuel consumption.

Moving on to the diesels, the A 180 CDI produces 109 PS (80 kW / 108 hp) and 250 Nm (184 lb-ft) while the A 200 CDI boasts 136 PS (100 kW / 134 hp) and 300 Nm (221 lb-ft) of torque. Lastly, the A 220 CDI has a 2.2-liter engine which develops 170 PS (125 kW / 168 hp) and 350 Nm (258 lb-ft) of torque.

Regardless of which engine is selected, it is equipped with an ECO start/stop system and can be paired to a six-speed manual or a 7G-DCT dual-clutch automatic.

On the safety front, there's a standard collision warning system with adaptive Brake Assist. It can be combined with an optional PRE-SAFE system which automatically tensions the seat belts and closes the windows if an accident is imminent.

The 2013 Mercedes A-Class will start arriving at dealerships in September.

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