Fiat 500X 2015> 1.4 Multiair 138bhp remap figures
The Fiat 500X 1.4 Multiair 138bhp (2015>) is a petrol 1.4L model making 138bhp and 231Nm as standard. After a Stage 1 ECU remap we expect 175bhp and 283Nm - up to 37bhp and 52Nm 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 | 138 bhp | 175 bhp | +37 bhp |
| Torque | 231 Nm | 283 Nm | +52 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 138 bhp | 231 Nm | |
| Stage 1Maximum software-only performance | 175 bhp | 283 Nm | +37 bhp +52 Nm |
| Stage 1 EcoPerformance with economy in mind | 166 bhp | 279 Nm | +28 bhp +48 Nm |
| Eco mapEconomy first | 163 bhp | 276 Nm | +25 bhp +45 Nm |
Who is the Stage 1 map for?
- Drivers who want a sharper throttle and a small, honest gain from software alone.
- Owners who would rather keep the car standard in every other way.
- Anyone who wants the fullest software-only map for this engine, accepting that the gain is modest without a turbocharger.
What this means for your 500X
Without a turbocharger the improvement comes from ignition, fuelling and throttle mapping rather than boost, so expect a smaller but still noticeable change in response.
Engine management is by a Marelli 8GMK unit. 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 Fiat 500X 1.4 Multiair 138bhp?
We expect 175bhp and 283Nm against 138bhp and 231Nm as standard: up to +37bhp and +52Nm. 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 Fiat 500X 1.4 Multiair 138bhp?
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: 166bhp and 279Nm expected. The Eco map is economy first: 163bhp and 276Nm. Both still sit above the standard 138bhp and 231Nm.
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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Other petrol variants
All petrol 500X variants · 500X 2015> overview · All Fiat figures