How much power does the GT63 S make with a tune?

Stage 1 delivers 700–740 WHP on stock hardware. Stage 2 with downpipes reaches 780–830 WHP.

Is the GT63 engine the same as the E63?

Yes. Both use the M177 4.0L twin-turbo V8 with twin-scroll turbochargers. The tuning path and parts are identical.

Does the GT63 S come with all-wheel drive?

Yes. All GT63 variants use AMG 4MATIC+ with a rear-biased torque split and Drift Mode capability.

Can I tune the GT63 S E Performance hybrid?

ECU calibration for the ICE component is available. The rear electric motor operates independently and is not modified by the tune.

Where can I buy GT63 performance parts?

YPG Motorsport carries ECU tunes, downpipes, forged internals, and M177 crate engines for the GT63. Free worldwide shipping from Kuwait.

Mercedes-AMG GT63 4-Door X290 — M177 4.0L Twin-Turbo V8 Performance Guide

The Mercedes-AMG GT 4-Door Coupe X290 (2019–present) brings the AMG GT nameplate to a four-door, four-seat grand tourer platform. The GT63 and GT63 S run the M177 4.0-litre twin-turbo V8 with 577 HP (GT63) or 630 HP (GT63 S), paired with 4MATIC+ all-wheel drive and a 9-speed MCT gearbox. The GT63 S E Performance plug-in hybrid variant adds an electric motor on the rear axle for a combined 831 HP — the most powerful production Mercedes-AMG ever built.

The GT63 shares its M177 powertrain architecture with the C63 W205 and E63 W213, meaning the full YPG Motorsport M177 tuning programme applies directly. The GT63 S benefits from the same twin-scroll turbocharger specification as the E63 S, with aggressive factory boost targets and substantial headroom for ECU calibration.

Factory Specifications

Engine Code	M177 (M177.980 DE 40 AL)
Displacement	3,982 cc (4.0L)
Configuration	90° V8, twin-turbo (hot-vee, twin-scroll)
Factory Power	577 HP (GT63) / 630 HP (GT63 S) / 831 HP (E Performance)
Factory Torque	590 lb-ft (GT63) / 664 lb-ft (GT63 S)
Turbochargers	Twin IHI twin-scroll (inboard hot-vee)
Transmission	MCT 9-speed (AMG Speedshift)
Drivetrain	4MATIC+ AWD with rear-biased torque split
Curb Weight	2,075 kg (GT63 S)
0–100 km/h	3.2 seconds (GT63 S)
Production Years	2019–present

ECU Tuning

The GT63 S uses the same twin-scroll M177 variant as the E63 S with comparable tuning headroom. Stage 1 ECU calibration delivers 700–740 WHP on stock hardware with no changes required. Stage 2 with catless downpipes pushes output to 780–830 WHP. The 4MATIC+ system handles the increased torque effectively — the GT63 S is one of the most tractable high-power platforms in the AMG range thanks to its wide rear tires (305-section) and sophisticated torque-vectoring rear axle.

ECU tuning is delivered via YPG Flash (remote OBD) for OBD-accessible models. Later-production GT63 models with locked Bosch MDG1 controllers require ECU unlock as part of the YPG Bench mail-in workflow.

Performance Upgrade Path

Stage 1 tuning is the obvious starting point. For Stage 2, add catless downpipes and consider an intake upgrade. The GT63's exhaust system is restrictive from the factory — downpipes significantly improve turbo spool and mid-range response. For builds beyond 850 WHP, the upgrade path follows the same M177 ladder proven on the C63 and E63: hybrid turbochargers, forged internals, and matched calibration. Complete M177 crate engines are available for race-application GT63 builds.

Available Parts at YPG Motorsport

Browse GT63 4-Door parts: ECU tuning, downpipes, M177 forged internals, and M177 engine builds. All parts ship free worldwide via FedEx International Priority.