2020 Mercedes AMG A 45 S 4MATIC+ DRIFT MODE. 2020 Mercedes AMG A 45 S 4MATIC+ DRIFT MODE. Sibscribe.
The extremely dynamic driving experience in a completely new dimension is greatly assisted by the fully variable all-wheel drive included as standard. The secret is AMG TORQUE CONTROL in the new rear axle differential: This has two electronically controlled multidisc clutches, each of which is connected to a rear axle drive shaft. In this way the drive power can not only be completely variably distributed between the front and rear wheels, but also selectively between the left and right rear wheel. This means that depending on the driving mode and situation, the drive torque can be separately distributed to both rear wheels.
The result is consistently optimum traction, even in adverse road conditions and during extreme cornering manoeuvres, for example on the racetrack. Furthermore, this sophisticated solution allows Drift mode (standard in the S-models, included in the optional AMG DYNAMIC PLUS package for the basic models), which makes “powersliding” possible for even more driving pleasure.
Drift mode can be called up in the “RACE” driving mode using the shift paddles, provided that ESP® is deactivated and the transmission is in manual mode.
Control of the drive torque to the front and rear axle, and between the two rear wheels, is electro-mechanical. The influencing factors for torque distribution are not only the driving speed, the lateral and longitudinal acceleration and the steering angle, but also the difference in rotational speed between the individual wheels, the gear selected and the accelerator position.
The main advantages of electro-mechanical control over an electro-hydraulic system relate to more refined driving dynamics – primarily due to the significantly faster response and speed-independent actuation of the discs over the entire adjustment range.
The all-wheel drive control is dependent on the selected driving mode and the AMG DYNAMICS setting. In “Basic” and “Advanced”, the 4MATIC system is in “Comfort” mode. In “Pro” and “Master” (standard for S-models, included in the optional AMG DYNAMIC PLUS package for basic models) the 4MATIC system switches to “Sport” mode ‑ for even more agile handling and an even higher threshold for the critical limits.
Before the system intervenes, 3-stage ESP® with individual control strategies in SPORT HANDLING MODE allows greater drift angles for a sporty driving style. When entering bends, the “45” models have an even more agile response thanks to braking intervention at the inner rear wheel ‑ depending on the selected AMG DYNAMICS mode or driving mode