Mercedes-Benz G 2018 - 2023 400d (3.0D) 340hp
Real standard and upgraded performance figures for the 400d (3.0D) 340hp engine in the Mercedes-Benz G 2018 - 2023.
Below: measured output for the 400d (3.0D) 340hp in the Mercedes-Benz G 2018 - 2023, standard vs. remapped, in both horsepower and torque.
| Horsepower (HP) | Torque (Nm) | |
|---|---|---|
| Standard | 340 | 700 |
| Stage 1 | 380 | 820 |
| Stage 2 | 400 | 880 |
- Make
- Mercedes-Benz
- Model
- G
- Generation
- 2018 - 2023
- Engine
- 400d (3.0D) 340hp
- Fuel type
- Turbo-Diesel
Frequently asked questions
Is Stage 1 tuning safe for the Mercedes-Benz G 2018 - 2023 400d (3.0D) 340hp?
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 400d (3.0D) 340hp make after tuning?
Standard output is 340 HP / 700 Nm; Stage 1 on this engine typically reaches 380 HP / 820 Nm. Exact results can vary slightly with fuel quality and vehicle condition.
How long does a Mercedes-Benz G 2018 - 2023 400d (3.0D) 340hp 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 400d (3.0D) 340hp 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.