GT63 AMG Stage 1 vs Stage 2
GT63 AMG Stage 1 vs Stage 2 — Power, Cost & What You Need
The Mercedes-AMG GT 4-Door (X290) with the M177 4.0-liter twin-turbo V8 delivers 577–630 HP from the factory in GT 63 and GT 63 S specifications. Combined with 4MATIC+ all-wheel drive and AMG’s advanced 9-speed MCT transmission, it’s one of the fastest four-door cars ever produced. ECU tuning takes it from fast to supercar-hunting territory.
Stage 1 GT63 AMG
| Spec | Stock GT 63 S | Stage 1 |
|---|---|---|
| Horsepower | 630 HP | ~700–720 HP |
| Torque | 664 lb-ft | ~720–750 lb-ft |
| Hardware | — | None required |
| 0–100 km/h | 3.2s | ~2.8–2.9s |
Software only — no hardware needed. The GT 63 S already runs the highest factory boost of any M177 application, but the calibration still leaves room for safe, reliable gains through optimized boost, timing, and fueling maps.
Stage 2 GT63 AMG
| Spec | Stage 1 | Stage 2 |
|---|---|---|
| Horsepower | ~700–720 HP | ~780–810 HP |
| Torque | ~720–750 lb-ft | ~780–830 lb-ft |
| Hardware | None | Downpipes, intake |
| 0–100 km/h | ~2.8–2.9s | ~2.6–2.7s |
With catless downpipes and a Stage 2 calibration, the GT 63 S enters hypercar performance territory. The 4MATIC+ system hooks up every bit of power, making sub-2.7s 0–100 launches repeatable and consistent.
Full Comparison
| Factor | Stage 1 | Stage 2 |
|---|---|---|
| Power Over Stock | +70–90 HP | +150–180 HP |
| Hardware Cost | $0 | $3,000–$5,000 |
| Daily Drivable? | ✅ 100% | ✅ Yes |
| Reversible? | ✅ Fully | ✅ Software + stock DPs |
Stage 1 for maximum value with zero hardware. Stage 2 for the absolute limit of the stock turbos. Either way, the GT 63 with a YPG calibration is one of the fastest four-door cars on the planet.
See also: C63 Stage 1 vs 2 | E63 Stage 1 vs 2 | M177 vs M178 Engines