Mercedes-Benz Trucks Atego 2004> 813 129bhp remap figures
Thinking of remapping a Mercedes-Benz Trucks Atego 813 129bhp? The standard car makes 129bhp and 500Nm; with a Stage 1 remap from our Leicester workshop we expect around 162bhp and 580Nm, up to +33bhp and +80Nm.
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 | 129 bhp | 162 bhp | +33 bhp |
| Torque | 500 Nm | 580 Nm | +80 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 129 bhp | 500 Nm | |
| Stage 1Maximum software-only performance | 162 bhp | 580 Nm | +33 bhp +80 Nm |
| Stage 1 EcoPerformance with economy in mind | 154 bhp | 574 Nm | +25 bhp +74 Nm |
| Eco mapEconomy first | 151 bhp | 570 Nm | +22 bhp +70 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.
The ECU recorded for this variant is a Temic. 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 813 129bhp?
We expect 162bhp and 580Nm against 129bhp and 500Nm as standard: up to +33bhp and +80Nm. 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 813 129bhp?
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: 154bhp and 574Nm expected. The Eco map is economy first: 151bhp and 570Nm. Both still sit above the standard 129bhp and 500Nm.
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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All diesel Atego variants · Atego 1998> overview · All Mercedes-Benz Trucks figures