Petrol

Mercedes GL X166 2012 onwards GL500 remap

Standard this engine makes 407hp and 600Nm. Our STAGE 1 file takes it to 510hp and 820Nm.

+103horsepower
+220newton metres
2stages available

Where the power arrives

Power and torque through the rev range, on the STAGE 1 file.

Power before and after
01382754135511,0001,9252,8503,8004,7255,650 RPM 01382754135511,0002,5003,9755,475hp RPM
  • Standard 407hp
  • Remapped 510hp
Torque before and after
02214436648861,0001,9252,8503,8004,7255,650 RPM 02214436648861,0002,5003,9755,475Nm RPM
  • Standard 600Nm
  • Remapped 820Nm

Stages for this engine

Stage 1 needs nothing fitted. Anything above assumes the supporting hardware is on the car already.

Every figure for the GL500

FilePowerGainTorqueGainPrice
Standard407hpn/a600Nmn/an/a
ECOn/an/a820Nmup 220£990
STAGE 1510hpup 103820Nmup 220£1,090

Economy files show no new power figure because they are written for torque and drivability rather than peak output.

Remapping the GL500

The Mercedes GL X166 2012 onwards GL500 runs a factory calibration built to cope with poor fuel, skipped servicing and hot countries. We rewrite the fuelling, boost and timing for this engine on this car, then test it before you get it back. The original file is kept, so it can go back to standard whenever you want.

On the petrol side the difference shows in throttle response and in how hard it pulls through the top half of the rev range. It feels sharper off idle and keeps going where it used to flatten out.

Figures on this page are for a standard car in good health. We read the fault codes and check the basics first, and if something needs attention we will tell you before we write anything. Have a look at the other engines on the X166 2012 onwards, the full GL range, or everything we do for Mercedes.

Other GL generations

Book your GL

We write and test every file at our Aston workshop, on our own rolling road. Ring us with your reg and we will tell you what your car should make before you commit to anything.