BMW 1 Series (F2X) 2015> 120i (1.6) 174bhp remap figures
Stock, this 2015> BMW 1 Series petrol (1.6L) produces 174bhp and 250Nm. Our expected figures for a Stage 1 remap are 220bhp and 303Nm, an expected gain of up to 46bhp and 53Nm.
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 | 174 bhp | 220 bhp | +46 bhp |
| Torque | 250 Nm | 303 Nm | +53 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 174 bhp | 250 Nm | |
| Stage 1Maximum software-only performance | 220 bhp | 303 Nm | +46 bhp +53 Nm |
| Stage 1 EcoPerformance with economy in mind | 209 bhp | 299 Nm | +35 bhp +49 Nm |
| Eco mapEconomy first | 205 bhp | 296 Nm | +31 bhp +46 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 1 Series
Naturally aspirated petrol engines have no boost to raise, so gains from software alone are more modest than on a turbocharged car and come from fuelling, ignition and throttle response.
This car is listed with a Bosch MEVD17.2.5(6) engine control 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 BMW 1 Series 120i (1.6) 174bhp?
We expect 220bhp and 303Nm against 174bhp and 250Nm as standard: up to +46bhp and +53Nm. 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 BMW 1 Series 120i (1.6) 174bhp?
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: 209bhp and 299Nm expected. The Eco map is economy first: 205bhp and 296Nm. Both still sit above the standard 174bhp and 250Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.