Mercedes GLC 300 EU6 (2.0T) 245 hp — Stage 1 file (+20 hp)

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Chip tuning for Mercedes GLC 300 EU6 (2.0T) 245 hp ECU

Mercedes GLC (2015 - X205) 300 EU6 (2.0T) 245 hp — premium petrol engine of the passenger segment of the Mercedes-Benz Group AG (Mercedes-Benz, AMG, Maybach, Smart, EQ) group (Германия, 1926). Stage 1 chip tuning raises power from 245 to 265 hp (+20 hp, +8%) and torque from 370 to 420 Nm (+50 Nm). This engine ships with different ECU variants: Bosch MED17.7.2, Siemens/Continental VGS4-NAG2. The flashing method is determined by the specific unit: OBD, Bench or Boot mode. In the CHIPOK database: 2 configurations · 2 ECU variants. A petrol engine built in 2015 — a Tricore platform without strong protection; OBD access works.

AMG is the performance division of Mercedes (since 1967), building engines on the 'one man, one engine' principle in Affalterbach. Mercedes is one of the most protected brands in the chip tuning industry in terms of encryption. Maybach is Mercedes's ultra-luxury sub-brand. Mercedes encryption is among the toughest in the industry, especially on modern models. Maybach uses Mercedes engines for the ultra-luxury segment, with the emphasis on quietness and smoothness. The factory calibration on Mercedes petrol engines is conservative, leaving headroom for Stage 1.

On Mercedes up to the recent generation, Stage 1 OBD flash is available. The AMG community is active in Germany, but the protection is the toughest in the industry, so Stage 1 on AMG usually requires Bench. Stage 1 on Mercedes often requires refreshing the adaptations after the flash. High-output Mercedes engines are premium-class with solid headroom for Stage 1. On modern high-output Mercedes, Bench reading is often required because of the encryption. The Mercedes premium segment is a high-output platform with Stage 2 potential.

Frequently asked questions

What is the Stage 1 effect on the Mercedes GLC 300 EU6 (2.0T) 245 hp?

Stage 1 chip tuning on the Mercedes GLC 300 EU6 (2.0T) 245 hp boosts engine output by 20 hp: from 245 to 265 hp. Torque rises from 370 to 420 Nm (+50 Nm).

What changes in the Mercedes GLC ECU after Stage 1?

Stage 1 is a software optimization of the factory ECU firmware of the Mercedes GLC with no hardware changes. The injection, boost, ignition-timing and torque maps are reprogrammed. The gain is +20 hp with no hardware changes.

Do you need hardware changes for Stage 1 on the Mercedes GLC?

Stage 1 on the powerful Mercedes GLC 300 EU6 (2.0T) 245 hp “lifts” the factory limiters with no hardware changes. The gain is noticeable in the mid and upper range. There is headroom left for moving to Stage 2 (downpipe + intake + intercooler).

What is Stage 2 for the Mercedes GLC 300 EU6 (2.0T) 245 hp?

Stage 2 for the Mercedes GLC 300 EU6 (2.0T) 245 hp is Stage 1 plus hardware changes: a downpipe, a larger intake and a performance intercooler. The gain is considerably higher, but it requires professional component selection.

Which control units is the Mercedes GLC 300 EU6 (2.0T) 245 hp built with?

The Mercedes GLC 300 EU6 (2.0T) 245 hp comes with 2 ECU variants: Bosch MED17.7.2, Siemens/Continental VGS4-NAG2. Calibration is done for the specific unit after the revision is identified.

Does the factory warranty of the Mercedes GLC remain valid after Stage 1?

After remapping the Mercedes GLC, the official factory warranty on the engine and gearbox is lost (this applies to any manufacturer when the ECU is modified). CHIPOK guarantees the quality of the calibration and free revisions.

How long is the wait for a Stage 1 remap for the Mercedes GLC?

Reading and writing via OBD takes 25-30 minutes on the Mercedes GLC. Bench reading (BDM/JTAG) takes about 60 minutes plus refitting. Remote file processing at CHIPOK takes 5-30 minutes.

How do you roll back to the factory firmware of the Mercedes GLC?

Before Stage 1 the original of the Mercedes GLC 300 EU6 (2.0T) 245 hp is read out and saved — returning to the factory state is possible at any time.

How much does chip tuning the Mercedes GLC 300 EU6 (2.0T) 245 hp cost?

The remap price for the Mercedes GLC 300 EU6 (2.0T) 245 hp is dynamic and is calculated in the CHIPOK calculator based on the selected options. A credit-based payment model, with no subscription fees.

Last updated: 01.09.2026 · Source: manufacturer technical documentation · Measurements: CHIPOK dyno