Mercedes-Benz Trucks Atego All 812 122hp

Real standard and upgraded performance figures for the 812 122hp engine in the Mercedes-Benz Trucks Atego All.

This page covers the 812 122hp as fitted to the Mercedes-Benz Trucks Atego All — the figures below reflect that specific engine, not the model as a whole.

Horsepower (HP)Torque (Nm)
Standard122470
Stage 1175590
Stage 2201650
Make
Mercedes-Benz Trucks
Model
Atego
Generation
All
Engine
812 122hp

Frequently asked questions

Is Stage 1 tuning safe for the Mercedes-Benz Trucks Atego All 812 122hp?

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 812 122hp make after tuning?

Standard output is 122 HP / 470 Nm; Stage 1 on this engine typically reaches 175 HP / 590 Nm. Exact results can vary slightly with fuel quality and vehicle condition.

How long does a Mercedes-Benz Trucks Atego All 812 122hp 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 812 122hp 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.