The W213-generation Mercedes-AMG E 63 4Matic+ is the first of its lineage to adopt all-wheel-drive – as denoted by the 4Matic+ suffix in its full name – in order to effectively harness the 612 hp and 850 Nm outputs (in S guise) from its M178 4.0 litre biturbo V8 engine. This powertrain is expected to remain in the facelift, though likely with some output growth.

Don’t be fooled by the lamp disguise – particularly at the rear – in the development vehicle spotted on tests, because the W213 E63 and corresponding mainstream models are expected to adopt the newer-style, sharper-looking units as seen on the sleeker-roofed CLS for its mid-lifecycle update.

Here, the E63 continues to get AMG-specific identifiers such as deeper front bumpers with large air intakes. The intakes themselves appear similar to the pre-facelift, and the changes are likely to be further along the bumper, fenders and grille surround.

Most of the car’s side profile appears intact, with the character line looking unchanged, while camouflage foil along the boot lid and aforementioned tail lamps, as well as bumper indicate the likely locations of visual updates. No current images of the E63 interior just yet, though the latest of running changes are set to continue through here, and without the latest MBUX interface which requires a different electrical architecture.

The driver should continue to have a selection of multiple drive modes at his or her disposal, with the AMG Dynamic Select programming expected to continue to offer a range of presets from comfort-oriented to performance-focused ones. Similar driveline hardware should also mean Drift Mode will continue to feature here, which allows the de-coupling of the front driveshafts for good old-fashioned RWD skids.