Mercedes-Benz Trucks Atego 2004> 1326 255bhp remap figures
Stock, this 2004> Mercedes-Benz Trucks Atego diesel (6.4L) produces 255bhp and 969Nm. Our expected figures for a Stage 1 remap are 300bhp and 1120Nm, an expected gain of up to 45bhp and 151Nm.
Choose your map
Stage 1 remap figures
A Stage 1 remap is a software-only change to the ECU on an otherwise standard car. It needs no extra parts, which makes it the usual starting point.
| Stock | Vanguard expected | Expected gain, up to | |
|---|---|---|---|
| Power | 255 bhp | 300 bhp | +45 bhp |
| Torque | 969 Nm | 1120 Nm | +151 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 255 bhp | 969 Nm | |
| Stage 1Maximum software-only performance | 300 bhp | 1120 Nm | +45 bhp +151 Nm |
| Stage 1 EcoPerformance with economy in mind | 289 bhp | 1108 Nm | +34 bhp +139 Nm |
| Eco mapEconomy first | 285 bhp | 1100 Nm | +30 bhp +131 Nm |
Who is the Stage 1 map for?
- Drivers who want stronger pulling power for overtaking, hills and towing, with no parts to fit.
- Daily and motorway drivers who want the engine to feel less strained at cruising speed.
- Anyone who wants the biggest software-only change we list for this engine.
What this means for your Atego
Diesel remaps work mainly on boost pressure, fuel delivery and torque limiters, which is why the Nm gain is usually the figure you feel in everyday driving, particularly when overtaking or towing.
This car is listed with a Temic engine control unit. Older engine management is simpler to work with, but age matters: worn sensors, leaks and tired components can hold back what a remap delivers, which is why we run a diagnostic check first.
We remap at our Belgrave Gate workshop in Leicester, or at your home or work within 30 miles, and every job starts with a diagnostic check.
Please note: these are expected figures, not guarantees. Real results vary with the condition of the vehicle, the ECU software version, fuel quality and the hardware fitted. Some options - including Stage 2 and anything that needs extra hardware - are for off-road or competition use only. We check every vehicle first and confirm what is achievable before any work starts.
Figures reviewed 22 October 2026.
Stage 1 questions
How much power does the Stage 1 map give the Mercedes-Benz Trucks Atego 1326 255bhp?
We expect 300bhp and 1120Nm against 255bhp and 969Nm as standard: up to +45bhp and +151Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.
Does a Stage 1 remap need any extra parts on the Mercedes-Benz Trucks Atego 1326 255bhp?
No. Stage 1 is a software-only change to the ECU on an otherwise standard car.
Is there a gentler map than Stage 1 for this engine?
Yes, two. Stage 1 Eco is performance with economy in mind: 289bhp and 1108Nm expected. The Eco map is economy first: 285bhp and 1100Nm. Both still sit above the standard 255bhp and 969Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.
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