Rapid Racing logo - dyno tuning and performance shop Grand Rapids MI

Siemens VGSx-NAG2 TCU Tuning

Transmission controller used in 27 supported models from 1 make.

Mercedes with the Siemens VGSx-NAG2

All Mercedes tunes
  • Mercedes A2012+W176 · 220 CDI (2.1), 260AutoTuner
  • Mercedes B2011+W246 · 250 CDI S&S (2.1), 260AutoTuner
  • Mercedes C2004+W203, W204, W205, W205-FL · 63 AMG (6.2i), 63 AMG 507 Series (6.2i), 63 AMG BlackSeries (6.2i), 63 AMG Perf. (6.2i), 180 CDI (2.1), 180 CDI S&S (2.1), 180 EU6 (1.6T), 200 BlueTEC (2.1), 200 CDI (2.1), 200 EU6 (2.0T), 220 CDI (2.1), 220 CDI S&S (2.1), 250 CDI (2.1), 250 CDI S&S (2.1), 250 EU6 (2.0T), 300 BlueEFFICIENCY (3.5i), 300 BlueTEC Hybrid (2.1), 300 CDI (3.0), 320 CDI (3.0), 350 BlueEFFIENCY (3.5i), 350 CDI (3.0), 350e Hybrid (2.0)AutoTuner
  • Mercedes CL2006+W216 · 63 AMG (5.5T), 63 AMG (6.2i), 63 AMG Perf. (5.5T)AutoTuner
  • Mercedes CLA2013+C117 · 260AutoTuner
  • Mercedes CLK2003+W209 · 63 AMG (6.2i), 63 AMG Black Series (6.2 V8), 320 CDI (3.0)AutoTuner
  • Mercedes CLS2004+C218, C219 · 63 AMG (5.5T), 63 AMG (6.2i), 63 AMG Perf. (5.5T), 63 AMG S (5.5T), 220 CDI S&S (2.1), 250 CDI S&S (2.1), 260, 300 (3.5i), 320 CDI (3.0), 350 (3.5i), 350 BlueEFFIENCY (3.5i), 350 CDI (3.0), 350dAutoTuner
  • Mercedes E2006+W211, W212, W213 · 63 AMG (5.5T), 63 AMG (6.2i), 63 AMG Perf. (5.5T), 63 AMG S (5.5T), 180 EU6 (1.6T), 200 BlueTEC (2.1), 200 CDI (2.1), 200 EU6 (2.0T), 220 CDI (2.1), 220 CDI S&S (2.1), 250 CDI (2.1), 250 EU6 (2.0T), 260, 300 (3.5i), 300 BlueEFFICIENCY (3.5i), 300 BlueTEC Hybrid (2.1), 300 CDI (3.0), 300d BlueTec (3.0), 320 CDI (3.0), 350 (3.5i), 350 BlueEFFIENCY (3.5i), 350 BlueTec (3.0), 350 CDI (3.0)AutoTuner
  • Mercedes G2000+W463-II, W463-III · 63 AMG (5.5T), 300 CDI (3.0), 320 CDI (3.0), 350 BlueTec (3.0), 350 CDI (3.0)AutoTuner
  • Mercedes GL2006+X164, X166 · 63 AMG (5.5T), 63 AMG S (5.5T), 320 CDI (3.0), 350 BlueTec (3.0), 350 CDI (3.0), 450 EU6 (4.7T)AutoTuner
  • Mercedes GLA2013+X156 · 260AutoTuner
  • Mercedes GLC2015+X205, X253 · 200 EU6 (2.0T), 250 CDI (2.1), 250 EU6 (2.0T)AutoTuner
  • Mercedes GLE2015+C292 · 63 AMG (5.5T), 63 AMG S (5.5T), 350 BlueTec (3.0)AutoTuner
  • Mercedes GLK2008+X204 · 200 CDI (2.1), 200 CDI BlueEFFICIENCY, 200 EU6 (2.0T), 220 CDI (2.1), 220 CDI S&S (2.1), 250 CDI S&S (2.1), 250 EU6 (2.0T), 260, 320 CDI (3.0), 350 (3.5i), 350 CDI (3.0), 350 EU6 (3.0T)AutoTuner
  • Mercedes GLS2016+X166 · 63 AMG (5.5T), 350 BlueTec (3.0)AutoTuner
  • Mercedes Maybach2016+600 (6.0i)AutoTuner
  • Mercedes ML2005+W164, W166 · 63 AMG (5.5T), 63 AMG (6.2i), 63 AMG S (5.5T), 250 CDI S&S (2.1), 300 (3.5i), 300 CDI (3.0), 320 CDI (3.0), 350 (3.5i), 350 BlueTec (3.0), 350 CDI (3.0)AutoTuner
  • Mercedes R2005+W251, W251-FL · 63 AMG (6.2i), 300 CDI (3.0), 320 CDI (3.0), 350 (3.5i), 350 CDI (3.0)AutoTuner
  • Mercedes S2005+W221, W222 · 63 AMG (5.5T), 63 AMG (6.2i), 63 AMG Perf. (5.5T), 63 AMG S (5.5T), 300 BlueTEC Hybrid (2.1), 350 BlueTec (3.0), 350 CDI (3.0), 600 (6.0i)AutoTuner
  • Mercedes SL2008+R230FL, R231 · 63 AMG (5.5T), 63 AMG (6.2i), 63 AMG Perf. (5.5T), 350 (3.5i)AutoTuner
  • Mercedes SLC2016+180 EU6 (1.6T), 200 EU6 (2.0T)AutoTuner
  • Mercedes SLK2004+R171, R172 · 250 CDI (2.1), 250 CDI S&S (2.1), 350 (3.5i), 350 BlueEFFIENCY (3.5i)AutoTuner
  • Mercedes SLS2010+C/R197 · 63 AMG (6.2i)AutoTuner
  • Mercedes Sprinter2006+W906, W906-FL, W907-W910 · 210/310/510 CDI (2.1), 211/311 CDI (2.1), 214/314 CDI (2.1), 216/316 CDI (2.1), 216/316/416/516 CDI (2.1), 219/319/419/519 CDI (3.0), 219/319/419/519 CDI BlueTEC (3.0)AutoTuner
  • Mercedes V2013+200 CDI S&S (2.1), 220 CDI S&S (2.1), 250 CDI S&S (2.1), 260AutoTuner
  • Mercedes Viano2010+W639FL · 30 CDIAutoTuner
  • Mercedes Vito2010+W447, W639 · 110 CDI (2.1), 111 CDI (1.6), 113 CDI (2.1), 114 CDI (2.1), 116 CDI (2.1), 122 CDI (3.0)AutoTuner

About Siemens VGSx-NAG2 tuning

The Siemens VGSx-NAG2 transmission control unit is supported in 27 models from Mercedes. We read, modify, and flash it with AutoTuner, then verify the result on our Dynojet 424xLC2 in Jenison, MI. Transmission tuning sharpens shift timing, firmness, and torque limits to match your power.

Browse all supported ECUs and TCUs

Don't See Your Vehicle?

These lists cover off-the-shelf tuning platforms. We also do standalone ECU installs and custom calibrations, so reach out and we'll tell you what's possible for your build. Compatibility data last updated 2026-09-24.

Book Your TuneContact Us