BMW 3 Series (G20) 2019> 320d 187bhp remap figures
Stock, this 2019> BMW 3 Series diesel (2.0L) produces 187bhp and 400Nm. Our expected figures for a Stage 1 remap are 244bhp and 509Nm, an expected gain of up to 57bhp and 109Nm.
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 | 187 bhp | 244 bhp | +57 bhp |
| Torque | 400 Nm | 509 Nm | +109 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 187 bhp | 400 Nm | |
| Stage 1Maximum software-only performance | 244 bhp | 509 Nm | +57 bhp +109 Nm |
| Stage 1 EcoPerformance with economy in mind | 230 bhp | 500 Nm | +43 bhp +100 Nm |
| Eco mapEconomy first | 225 bhp | 495 Nm | +38 bhp +95 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 3 Series
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.
Engine management is by a Bosch MD1CS001 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 3 Series 320d 187bhp?
We expect 244bhp and 509Nm against 187bhp and 400Nm as standard: up to +57bhp and +109Nm. 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 3 Series 320d 187bhp?
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: 230bhp and 500Nm expected. The Eco map is economy first: 225bhp and 495Nm. Both still sit above the standard 187bhp and 400Nm.
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 BMW 3 Series figures
Other diesel variants
- 320d MH 187bhp 2019>
- 320d MH 163bhp 2019>
- 318d 147bhp 2019>
- 330d 261bhp 2019>
- 330d MH 282bhp 2019>
- M340d MH 340bhp 2020>
All diesel 3 Series (G20) variants · 3 Series (G20) 2019> overview · All BMW figures