Citroen C5 AirCross 2018> 1.5 BlueHDi 129bhp remap figures
Stock, this 2018> Citroen C5 AirCross diesel (1.5L) produces 129bhp and 300Nm. Our expected figures for a Stage 1 remap are 155bhp and 344Nm, an expected gain of up to 26bhp and 44Nm.
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 | 155 bhp | +26 bhp |
| Torque | 300 Nm | 344 Nm | +44 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 129 bhp | 300 Nm | |
| Stage 1Maximum software-only performance | 155 bhp | 344 Nm | +26 bhp +44 Nm |
| Stage 1 EcoPerformance with economy in mind | 149 bhp | 340 Nm | +20 bhp +40 Nm |
| Eco mapEconomy first | 146 bhp | 338 Nm | +17 bhp +38 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 C5 AirCross
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 Bosch MD1CS003. Newer ECUs often protect their software, so we read the exact unit and version on the car before confirming the figures on this page.
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 Citroen C5 AirCross 1.5 BlueHDi 129bhp?
We expect 155bhp and 344Nm against 129bhp and 300Nm as standard: up to +26bhp and +44Nm. 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 Citroen C5 AirCross 1.5 BlueHDi 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: 149bhp and 340Nm expected. The Eco map is economy first: 146bhp and 338Nm. Both still sit above the standard 129bhp and 300Nm.
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 Citroen C5 AirCross figures
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All diesel C5 AirCross variants · C5 AirCross 2018> overview · All Citroen figures