Mercedes-Benz AMG GT engine remapping BHP and Torque gains

Remapping the Mercedes-Benz AMG GT (2018), 63 AMG 4.0 V8 Bi-Turbo – 585HP.

A Stage 1 remap on the 63 AMG 4.0 V8 Bi-Turbo – 585HP fitted to the Mercedes-Benz AMG GT (2018) is firmly power-led: BHP climbs from 585bhp to 650bhp (a 11.1% gain), while torque rises a more modest 6.3% from 800Nm to 850Nm.

As a turbocharged petrol, there is real headroom here, and this worthwhile gain shows up mainly as a broader, more responsive power band rather than one dramatic jump. These figures apply to 2018 models.

Typical remap gains for the AMG GT 63 AMG 4.0 V8 Bi-Turbo – 585HP

Power (Horsepower)
Standard vs Remapped
STANDARD 585 BHP

TUNED → 650 BHP

Torque
Standard vs Remapped
STANDARD 800 NM

TUNED → 850 NM

+65 BHPPower gained
+11.1%BHP increase
+50 NmTorque gained
+6.3%Torque increase

  • Power: 585bhp standard, 650bhp after a Stage 1 remap.
  • Torque: 800Nm standard, 850Nm after a Stage 1 remap.
  • This is a power-led gain: BHP increases by more than torque, widening the usable power band rather than boosting low-end pull.
  • This is a turbocharged engine, which typically means further headroom exists beyond Stage 1 if hardware is upgraded.
  • As a petrol engine, the practical benefit is mainly felt as sharper throttle response and a broader power band.
  • These figures apply specifically to 2018 models.
  • These are Stage 1 figures only, achieved without any hardware changes.

Questions about remapping your AMG GT 63 AMG 4.0 V8 Bi-Turbo – 585HP

How much power and torque does a Stage 1 remap add to the Mercedes-Benz AMG GT (2018) 63 AMG 4.0 V8 Bi-Turbo – 585HP?

A Stage 1 remap typically takes the Mercedes-Benz AMG GT (2018) 63 AMG 4.0 V8 Bi-Turbo – 585HP from 585bhp to around 650bhp, and torque from 800Nm to around 850Nm. This is a worthwhile gain achieved entirely through software, with no hardware changes required.

Is the Mercedes-Benz AMG GT (2018) 63 AMG 4.0 V8 Bi-Turbo – 585HP a good candidate for remapping?

Generally, yes: as a turbocharged engine it has the headroom to respond well to a quality remap, and the worthwhile gain shown here reflects that. The main caveats are condition, not the engine itself, a healthy service history, no outstanding fault codes, and (for diesels) a clear DPF and EGR are what actually determine whether this particular car is ready for a remap.

Will remapping affect the warranty on my Mercedes-Benz AMG GT (2018)?

A manufacturer can only void the parts of a warranty that the remap directly affects, not the entire vehicle, under the Consumer Rights Act and EU Block Exemption principles. In practice, on a Mercedes-Benz AMG GT (2018) 63 AMG 4.0 V8 Bi-Turbo – 585HP this usually means engine and transmission-related claims are the ones worth discussing with a reputable tuner before booking.

What should I check before booking a remap for my Mercedes-Benz AMG GT (2018) 63 AMG 4.0 V8 Bi-Turbo – 585HP?

Before booking, confirm the tuner uses a custom or bespoke file rather than a generic off-the-shelf map, ask whether they do a pre-remap health check, and check service history and mileage on your specific Mercedes-Benz AMG GT (2018).

What's the difference between a Stage 1 and Stage 2 remap for the 63 AMG 4.0 V8 Bi-Turbo – 585HP?

Stage 1 is software-only and is what the figures on this page reflect. Stage 2 builds on that, but on a turbocharged engine like this, Stage 2 usually adds further gains but requires supporting hardware such as an upgraded intake or exhaust, so it is a separate conversation with a tuner rather than an automatic next step.

Will remapping my Mercedes-Benz AMG GT (2018) affect my insurance?

Yes, always, a remap is a modification and must be declared to your insurer regardless of size. Given this worthwhile gain on the 63 AMG 4.0 V8 Bi-Turbo – 585HP, expect a likely premium increase, and it is worth getting a quote from a specialist modified-vehicle insurer before booking the remap itself.