Mercedes-Benz GL X166 - 2012 -> 350 Bluetec 258hp

Real standard and upgraded performance figures for the 350 Bluetec 258hp engine in the Mercedes-Benz GL X166 - 2012 ->.

Standard vs. upgraded performance for the Mercedes-Benz GL X166 - 2012 -> 350 Bluetec 258hp, based on real files we've processed for this exact engine.

Horsepower (HP)Torque (Nm)
Standard258620
Stage 1290690
Stage 2306725
Make
Mercedes-Benz
Model
GL
Generation
X166 - 2012 ->
Engine
350 Bluetec 258hp
Fuel type
Turbo-Diesel

Frequently asked questions

Is Stage 1 tuning safe for the Mercedes-Benz GL X166 - 2012 -> 350 Bluetec 258hp?

Yes — Stage 1 for this engine is a software-only remap calibrated to stay within its stock mechanical limits (turbo, clutch, fueling), so no hardware changes are required.

How much more power does the 350 Bluetec 258hp make after tuning?

Standard output is 258 HP / 620 Nm; Stage 1 on this engine typically reaches 290 HP / 690 Nm. Exact results can vary slightly with fuel quality and vehicle condition.

How long does a Mercedes-Benz GL X166 - 2012 -> 350 Bluetec 258hp remap take?

Once your original file is uploaded through the member panel, most requests for this engine are completed within a few hours.

Can the 350 Bluetec 258hp be reverted to its original file?

Yes — we keep the original file on record for the request, so the ECU can be put back to stock at any time.