Audi A4 (B9) 2018-2019 40 TDI 187bhp remap figures
The Audi A4 40 TDI 187bhp (2018-2019) is a diesel 2.0L model making 187bhp and 400Nm as standard. After a Stage 1 ECU remap we expect 237bhp and 531Nm - up to 50bhp and 131Nm 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 | 187 bhp | 237 bhp | +50 bhp |
| Torque | 400 Nm | 531 Nm | +131 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 187 bhp | 400 Nm | |
| Stage 1Maximum software-only performance | 237 bhp | 531 Nm | +50 bhp +131 Nm |
| Stage 1 EcoPerformance with economy in mind | 225 bhp | 521 Nm | +38 bhp +121 Nm |
| Eco mapEconomy first | 221 bhp | 514 Nm | +34 bhp +114 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 A4
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.
This car is listed with a Bosch EDC17C74 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 Audi A4 40 TDI 187bhp?
We expect 237bhp and 531Nm against 187bhp and 400Nm as standard: up to +50bhp and +131Nm. 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 Audi A4 40 TDI 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: 225bhp and 521Nm expected. The Eco map is economy first: 221bhp and 514Nm. 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 Audi A4 figures
Other diesel variants
- 2.0 TDI 187bhp 2015-2018
- 40 TDI 201bhp 2019>
- 35 TDI 163bhp 2019>
- 3.0 TDI 214bhp 2015-2016
- 3.0 TDI 214bhp 2015-2019
- 2.0 TDI 147bhp 2015-2018
- 30 TDI 134bhp 2019>
- 3.0 TDI 268bhp 2015-2017
- 3.0 TDI 268bhp 2017>
- 50 TDI 281bhp 2019>
All diesel A4 (B9) variants · A4 (B9) 2015> overview · All Audi figures