Mercedes-Benz GTC AMG 2017> 4.0 V8 Bi-Turbo 549bhp remap figures
Stock, this 2017> Mercedes-Benz GTC AMG petrol (4.0L) produces 549bhp and 681Nm. Our expected figures for a Stage 1 remap are 665bhp and 846Nm, an expected gain of up to 116bhp and 165Nm.
Choose your map
Stage 1 remap figures
A Stage 1 remap is a software-only change to the ECU on an otherwise standard car. It needs no extra parts, which makes it the usual starting point.
| Stock | Vanguard expected | Expected gain, up to | |
|---|---|---|---|
| Power | 549 bhp | 665 bhp | +116 bhp |
| Torque | 681 Nm | 846 Nm | +165 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 549 bhp | 681 Nm | |
| Stage 1Maximum software-only performance | 665 bhp | 846 Nm | +116 bhp +165 Nm |
| Stage 1 EcoPerformance with economy in mind | 636 bhp | 833 Nm | +87 bhp +152 Nm |
| Eco mapEconomy first | 627 bhp | 825 Nm | +78 bhp +144 Nm |
Who is the Stage 1 map for?
- Drivers who want a noticeably quicker car from a software-only change, with no new parts.
- Daily drivers who want stronger mid-range pull and a sharper throttle.
- Anyone who wants the biggest gain we list without fitting hardware.
What this means for your GTC AMG
Turbocharged petrol engines respond well to calibration changes: boost and timing are the main levers, and the result is a flatter, stronger torque curve as well as a higher peak.
The ECU recorded for this variant is a Bosch MED17.7.5. Newer ECUs often protect their software, so we read the exact unit and version on the car before confirming the figures on this page.
We remap at our Belgrave Gate workshop in Leicester, or at your home or work within 30 miles, and every job starts with a diagnostic check.
Please note: these are expected figures, not guarantees. Real results vary with the condition of the vehicle, the ECU software version, fuel quality and the hardware fitted. Some options - including Stage 2 and anything that needs extra hardware - are for off-road or competition use only. We check every vehicle first and confirm what is achievable before any work starts.
Figures reviewed 22 October 2026.
Stage 1 questions
How much power does the Stage 1 map give the Mercedes-Benz GTC AMG 4.0 V8 Bi-Turbo 549bhp?
We expect 665bhp and 846Nm against 549bhp and 681Nm as standard: up to +116bhp and +165Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.
Does a Stage 1 remap need any extra parts on the Mercedes-Benz GTC AMG 4.0 V8 Bi-Turbo 549bhp?
No. Stage 1 is a software-only change to the ECU on an otherwise standard car.
Is there a gentler map than Stage 1 for this engine?
Yes, two. Stage 1 Eco is performance with economy in mind: 636bhp and 833Nm expected. The Eco map is economy first: 627bhp and 825Nm. Both still sit above the standard 549bhp and 681Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.
More Mercedes-Benz GTC AMG figures
Other petrol variants
All petrol GTC AMG variants · GTC AMG 2015> overview · All Mercedes-Benz figures