Mercedes-Benz Trucks Atego 2004> 1526 256bhp remap figures
The Mercedes-Benz Trucks Atego 1526 256bhp (2004>) is a diesel 6.4L model making 256bhp and 969Nm as standard. After a Stage 1 ECU remap we expect 300bhp and 1120Nm - up to 44bhp and 151Nm more than stock.
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 | 256 bhp | 300 bhp | +44 bhp |
| Torque | 969 Nm | 1120 Nm | +151 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 256 bhp | 969 Nm | |
| Stage 1Maximum software-only performance | 300 bhp | 1120 Nm | +44 bhp +151 Nm |
| Stage 1 EcoPerformance with economy in mind | 289 bhp | 1108 Nm | +33 bhp +139 Nm |
| Eco mapEconomy first | 285 bhp | 1100 Nm | +29 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
On a diesel the biggest change is normally torque: the remap changes how much fuel and boost the ECU allows across the rev range, so pulling power arrives earlier and holds on longer.
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 1526 256bhp?
We expect 300bhp and 1120Nm against 256bhp and 969Nm as standard: up to +44bhp 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 1526 256bhp?
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 256bhp 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.
More Mercedes-Benz Trucks Atego figures
Other diesel variants
- 1226 255bhp 2004>
- 1326 255bhp 2004>
- 1024 238bhp 2004>
- 1224 238bhp 2004>
- 1324 238bhp 2004>
- 1524 238bhp 2004>
- 924 238bhp 1998>
- 824 238bhp 2004>
- 1228 279bhp 2004>
- 1328 279bhp 1998>
All diesel Atego variants · Atego 1998> overview · All Mercedes-Benz Trucks figures