Audi A8 (D4) 2014> 4.0 TFSI 428bhp remap figures
The Audi A8 4.0 TFSI 428bhp (2014>) is a petrol model making 428bhp and 601Nm as standard. After a Stage 1 ECU remap we expect 505bhp and 697Nm - up to 77bhp and 96Nm 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 | 428 bhp | 505 bhp | +77 bhp |
| Torque | 601 Nm | 697 Nm | +96 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 428 bhp | 601 Nm | |
| Stage 1Maximum software-only performance | 505 bhp | 697 Nm | +77 bhp +96 Nm |
| Stage 1 EcoPerformance with economy in mind | 486 bhp | 689 Nm | +58 bhp +88 Nm |
| Eco mapEconomy first | 480 bhp | 685 Nm | +52 bhp +84 Nm |
Who is the Stage 1 map for?
- Drivers who want a noticeably quicker car from a software-only change, with no new parts.
- Daily drivers who want stronger mid-range pull and a sharper throttle.
- Anyone who wants the biggest gain we list without fitting hardware.
What this means for your A8
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 MED17.1.1. We read the ECU on your car and compare it with the software listed here before any work starts, so you know what to expect before you commit.
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 A8 4.0 TFSI 428bhp?
We expect 505bhp and 697Nm against 428bhp and 601Nm as standard: up to +77bhp and +96Nm. 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 A8 4.0 TFSI 428bhp?
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: 486bhp and 689Nm expected. The Eco map is economy first: 480bhp and 685Nm. Both still sit above the standard 428bhp and 601Nm.
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 A8 figures
Other petrol variants
- 4.0 TFSI 414bhp 2012>
- 4.2 FSI 366bhp 2010>
- 3.0 TFSI 305bhp 2014>
- 3.0 TFSI 285bhp 2010>
- 2.0 TFSI Hybrid 241bhp 2012>
All petrol A8 (D4) variants · A8 (D4) 2010-2017 overview · All Audi figures