Mercedes-Benz A-Class Sedan 2018 revealed

Mercedes-Benz has released images and high-level specification details of its new A-Class sedan ahead of the car's public debut at the Paris motor show in October, and its Australian arrival in the second half of 2019.

In terms of drivetrain and spec, the new-generation sedan is nearly identical to the A-Class hatchback revealed earlier in the year and headlining new standard technologies including the Mercedes-Benz User Experience (MBUX) multimedia system.

Inside, the A-Class sedan comes with the Mercedes-Benz User Experience (MBUX) multimedia system.

What does distinguish it however, is its longer and slightly taller dimensions.

Measuring 1549mm long and 1446mm tall, the sedan is stretched 130mm and 6mm respectively over its hatch sibling.

No surprise, boot space is significantly increased, the sedan holding 420 litres compared to the hatch at 370 litres.

The German small car also features a wide boot aperture at 950mm wide and 462mm between the lock and rear window.

Thanks in part to its extended rear end, Mercedes-Benz claims the A-Class sedan matches the CLS Coupe as the most aerodynamic production vehicle, with a drag coefficient benchmark of 0.22.

Mercedes-Benz claims the A-Class sedan matches the CLS Coupe as the most aerodynamic production vehicle.

In overseas markets, the sedan will launch in two grades, the petrol-powered A200 and the diesel-powered A180d, though we suspect Mercedes-Benz Australia will only pick up the former at first.

The A200 is powered by a 1.3-litre turbocharged four-cylinder petrol engine producing 120kW/250Nm, matched exclusively to a seven-speed dual-clutch auto transmission.

Mercedes claims the sedan, in A200 guise, will sip just 5.2 litres per 100km while emitting 124g/km of carbon-dioxide.

While local pricing for the sedan is yet to be confirmed, its A200 hatchback sibling will start at $47,200 (plus on-road costs) when it hits showrooms in August, with higher and lower spec variants set to follow.

Do you prefer the new-generation Mercedes-Benz A-Class in sedan or hatchback form? Tell us your thoughts in the comment section below.