Volkswagen Phaeton 2003> 5.0 V10 TDI 308bhp remap figures
Stock, this 2003> Volkswagen Phaeton diesel (4.9L) produces 308bhp and 750Nm. Our expected figures for a Stage 1 remap are 380bhp and 886Nm, an expected gain of up to 72bhp and 136Nm.
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 | 308 bhp | 380 bhp | +72 bhp |
| Torque | 750 Nm | 886 Nm | +136 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 308 bhp | 750 Nm | |
| Stage 1Maximum software-only performance | 380 bhp | 886 Nm | +72 bhp +136 Nm |
| Stage 1 EcoPerformance with economy in mind | 362 bhp | 875 Nm | +54 bhp +125 Nm |
| Eco mapEconomy first | 356 bhp | 868 Nm | +48 bhp +118 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 Phaeton
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.
This car is listed with a Bosch EDC16U engine control unit. 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 Volkswagen Phaeton 5.0 V10 TDI 308bhp?
We expect 380bhp and 886Nm against 308bhp and 750Nm as standard: up to +72bhp and +136Nm. 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 Volkswagen Phaeton 5.0 V10 TDI 308bhp?
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: 362bhp and 875Nm expected. The Eco map is economy first: 356bhp and 868Nm. Both still sit above the standard 308bhp and 750Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.
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