Mercedes-Benz will launch a saloon version of the new A-Class at the end of the year, with models expected in showrooms by Spring 2019.

The baby four-door is expected to carry on the success of the CLA, which attracted a lot of new customers to the brand.

Its "sleek body" is more aerodynamic and promises greater efficiency than the hatchback, according to Mercedes-Benz.

Only two engines have been confirmed for launch: a 1.3-litre petrol unit (A 200) with 163PS and CO2 emissions from 119g/km, and a 1.5-litre diesel (A 180 d) with 116PS and CO2 from 107g/km.

Both use a seven-speed automatic gearbox.

Mercedes says the A-Class saloon has class-leading rear headroom and a competitive 420-litre boot.

Its main rival will be the Audi A3 saloon.

Entry-level models are well equipped. Standard features include the new MBUX – Mercedes-Benz User Experience infotainment system with touchscreen, and driving assistance systems of such as Active Brake Assist and Active Lane Keeping Assist.

Pricing and further details will be available nearer to the vehicle’s official launch.