Mercedes-Benz has introduced two new entry-level models to its line-up and revealed three new engines.

The additions comprise a new entry-level Mercedes-Benz A160 CDI and B160 CDI, a first-time B220 4MATIC model, and a new engine for the B180 CDI and revised B180 CDI BlueEfficiency Edition.

Sharing the same 66kW/220Nm 1.5-litre four-cylinder turbo-diesel engine and six-speed manual transmission, the A160 and B160 CDI models will hit 100km/h in 13.8 and 14 seconds respectively, before both reach a top speed of 180km/h.

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Replacing the B180 CDI’s previous 80kW/250Nm 1.8-litre four-cylinder diesel engine is a 1.5-litre unit. Despite the smaller capacity, power output remains unchanged, torque is increased by 10Nm and consumption has been reduced from 4.4 to 4.1L/100km.

Delivering even better economy in the B180 CDI BlueEfficiency Edition, the same 1.5-litre engine delivers a claimed 3.8L/100km. The updated model has had its aerodynamics, suspension height and six-speed manual transmission all revised to reduce fuel consumption by seven per cent over the previous model.

Though the new and updated models are due to arrive in German dealerships in September, alongside the CLA250 4MATIC, CLA45 AMG and CLA45 AMG Edition 1, Mercedes-Benz Australia is remaining tight-lipped about any planned expansion of the local A- and B-Class ranges.