Mercedes-AMG has unveiled an updated version of its twin-turbo V12 S65 flagship at the Shanghai Motor Show.

The drivetrain remains unchanged, meaning a 6.0-litre twin-turbo V12 producing 463kW/1000Nm through a seven-speed automatic gearbox, however while 0-100km/h takes just 4.3sec, the newly updated S63 has now overtaken its bigger brother in terms of speed.

2018 Mercedes-AMG S65 engine

The updated Magic Body Control system, which is able to scan the road ahead to warn the suspension of bumps, now incorporates the curve-tilting function introduced in the S-Class Coupe.

2018 Mercedes-AMG S65 rear

Elsewhere, the S65 benefits from all the upgrades introduced as part of the new Mercedes-Benz S-Class facelift, including a new interior with twin 12.3-inch digital displays, revised styling front and rear and an unprecedented level of driving assistance systems.

2018 Mercedes-AMG S65 interior

The new Mercedes-Benz S-Class range arrives in Australia in December 2017.