Audi A6 (C5) 1997-2004 2.5 TDI 163bhp remap figures
Stock, this 1997-2004 Audi A6 diesel (2.5L) produces 163bhp and 311Nm. Our expected figures for a Stage 1 remap are 210bhp and 420Nm, an expected gain of up to 47bhp 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 | 163 bhp | 210 bhp | +47 bhp |
| Torque | 311 Nm | 420 Nm | +109 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 163 bhp | 311 Nm | |
| Stage 1Maximum software-only performance | 210 bhp | 420 Nm | +47 bhp +109 Nm |
| Stage 1 EcoPerformance with economy in mind | 198 bhp | 411 Nm | +35 bhp +100 Nm |
| Eco mapEconomy first | 194 bhp | 406 Nm | +31 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 A6
On a diesel the biggest change is normally torque: the remap changes how much fuel and boost the ECU allows across the rev range, so pulling power arrives earlier and holds on longer.
The ECU recorded for this variant is a Bosch EDC15VM+. Older engine management is simpler to work with, but age matters: worn sensors, leaks and tired components can hold back what a remap delivers, which is why we run a diagnostic check first.
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 A6 2.5 TDI 163bhp?
We expect 210bhp and 420Nm against 163bhp and 311Nm as standard: up to +47bhp 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 Audi A6 2.5 TDI 163bhp?
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: 198bhp and 411Nm expected. The Eco map is economy first: 194bhp and 406Nm. Both still sit above the standard 163bhp and 311Nm.
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 A6 figures
Other diesel variants
- 2.5 TDI 155bhp 1997-2004
- 2.5 TDI 180bhp 1997-2004
- 1.9 TDI PD 130bhp 1997-2004
- 1.9 TDI PD 115bhp 1997-2004
- 1.9 TDI 110bhp 1997-2004
All diesel A6 (C5) variants · A6 (C5) 1997-2004 overview · All Audi figures