Audi RS6 (C5) 1997-2004 4.2 V8 Twin Turbo 443bhp Stage 1 Eco remap figures
The Stage 1 Eco map for the Audi RS6 4.2 V8 Twin Turbo 443bhp (1997-2004): 492bhp and 639Nm expected from a standard 443bhp and 560Nm, up to +49bhp and +79Nm. It keeps most of the Stage 1 gain (Stage 1 is 508bhp and 646Nm) and is tuned with economy in mind: the choice if you want the performance and care what each tank costs.
Choose your map
Stage 1 Eco remap figures
Stage 1 Eco is performance with economy in mind. It keeps most of the Stage 1 gain, so the car still pulls well, but the map is shaped for efficient, relaxed driving rather than flat-out output. It is above the standard figures. We don't quote mpg, because economy depends on the car and how it is driven.
| Stock | Vanguard expected | Expected gain, up to | |
|---|---|---|---|
| Power | 443 bhp | 492 bhp | +49 bhp |
| Torque | 560 Nm | 639 Nm | +79 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 443 bhp | 560 Nm | |
| Stage 1Maximum software-only performance | 508 bhp | 646 Nm | +65 bhp +86 Nm |
| Stage 1 EcoPerformance with economy in mind | 492 bhp | 639 Nm | +49 bhp +79 Nm |
| Eco mapEconomy first | 487 bhp | 635 Nm | +44 bhp +75 Nm |
Who is the Stage 1 Eco map for?
- Drivers who want a quicker, more responsive car, tuned with economy in mind.
- Daily drivers who want strong mid-range pull without giving up efficiency.
- Anyone who would otherwise take full Stage 1 but cares what each tank costs.
How Stage 1 Eco compares with Stage 1
Full Stage 1 on this Audi RS6 is expected to give 508bhp and 646Nm (+65bhp, +86Nm). The Stage 1 Eco keeps about 75% of that power gain and 92% of the torque gain, so you get 492bhp and 639Nm: 16bhp less and 7Nm less than Stage 1, with the map shaped for efficient, relaxed driving, so it suits you if you want the pull and care about running costs. Both sit above the standard 443bhp and 560Nm.
What this means for your RS6
On a turbocharged petrol engine a remap adjusts boost, ignition timing and fuelling together, so both power and mid-range torque rise and the car pulls harder out of corners and junctions.
The ECU recorded for this variant is a Bosch ME7.1.1. 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 Eco questions
How much power does the Stage 1 Eco map give the Audi RS6 4.2 V8 Twin Turbo 443bhp?
We expect 492bhp and 639Nm against 443bhp and 560Nm as standard: up to +49bhp and +79Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.
How does Stage 1 Eco differ from Stage 1 on this engine?
Full Stage 1 is expected to give 508bhp and 646Nm. Stage 1 Eco gives 16bhp less and 7Nm less, in exchange for a map shaped with economy in mind. It still sits above the standard figures.
Is Stage 1 Eco or the Eco map better for me?
Choose Stage 1 Eco if you want the performance (492bhp and 639Nm) and still care about running costs. Choose the Eco map (487bhp and 635Nm) if economy matters more than pace.
Will the Stage 1 Eco map save fuel?
It is tuned with economy in mind while keeping most of the Stage 1 performance. We do not quote mpg figures, because economy depends on the car, its condition and how it is driven.
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 RS6 figures
Other petrol variants
All petrol RS6 (C5) variants · RS6 (C5) 1997-2004 overview · All Audi figures