Audi A6 4.2 300(c5)
Remapping in Midwales
Audi A6 4.2 300(c5) in Midwales. Standard and remapped figures for this exact engine.

- Fully dyno tested remaps
- 30 day money back guarantee
- Lifetime software warranty
- UK-wide local network
Remap stats
Audi A6 4.2 300(c5): standard vs remapped
Petrol engine. Indicative stage 1 figures, fully dyno tested.
Power
+24 bhp · +8%- Standard300 bhp
- Remapped324 bhp
Torque
+43 Nm · +11%- Standard400 Nm
- Remapped443 Nm
Tuning figures are indicative estimates, not guaranteed results. Actual results depend on the condition of the vehicle.
Prices from £130
Fully dyno tested | 30 day money back guarantee | Lifetime software warranty
Out of the box the Audi A6 4.2 300(c5) gives 300 bhp and 400 Nm. Remapped in Midwales, we record 324 bhp and 443 Nm, so 24 bhp and 43 Nm more, or 8% and 11% respectively.
These are indicative figures for a petrol Audi A6 in good health. Your own results depend on the condition of the car.
Audi A6 4.2 300(c5) remap figures
- Fuel: Petrol
- Standard power: 300 bhp, remapped: 324 bhp (+24 bhp, +8%)
- Standard torque: 400 Nm, remapped: 443 Nm (+43 Nm, +11%)
- Service: stage 1 ECU remap, fully dyno tested
How remapping works on a petrol Audi A6
With a petrol engine the remap works through the ECU's ignition, fuelling and turbo boost tables. Re-calibrating them within safe limits releases power that is already there, rather than adding anything to the engine.
How the Audi A6 4.2 300(c5) compares
Of the 22 petrol A6 engines in our data, this one comes 16th for power gain, which is 11 bhp below the A6 petrol average of 35 bhp.
Across our whole catalogue the average petrol remap adds 27 bhp and 51 Nm, so this engine's 24 bhp and 43 Nm sits below that benchmark.
Remapping your Audi A6 in Midwales
Remap Experts has a dedicated Midwales site, so you deal with a local team backed by a national network. We regularly work with drivers in Llanidloes, Welshpool, Newtown, Machynlleth and Llandrindod Wells and nearby areas of Wales.
All our remaps are fully dyno tested, backed by a 30 day money back guarantee and covered by a lifetime software warranty. Request a quote online or call 0800 779 7864.
If you are closer to Gwent, Cardiff and Chester, those neighbouring Remap Experts sites can help too.

Get a quote for your Audi A6 4.2 300(c5)
Send your registration and we will confirm the exact remap, the price and the next available slot.
Included
What we can do for your Audi A6
Stage 1 ECU remap
Add power and torque and improve driveability. Software only, tailored to your engine.
ECU repair and testing
Is your engine control unit playing up? We can arrange testing and repair, and source replacement ECUs.
DPF and EGR fault repair
Persistent DPF or EGR errors diagnosed and resolved in accordance with all current road-legal standards.
Engine carbon cleaning
Fault finding and carbon cleaning for the inside of your engine, typically completed in a couple of hours.
Same model
Other A6 engines
- Audi A6 1.8t 150 Cv(c5)petrol
- Audi A6 1.8t 180(c4/c5)petrol
- Audi A6 2.0 TFSI 170(c6)petrol
- Audi A6 2.4 165(c5)petrol
- Audi A6 2.4 170(c5)petrol
- Audi A6 2.7t 230(c5)petrol
- Audi A6 2.7t 250(c5)petrol
- Audi A6 3.0 V6 220(c5)petrol
- Audi A6 3.2 FSI 255(c6)petrol
- Audi A6 Allroad 2.5 V6 TDI 163 QuaTTro(c5)diesel
- Audi A6 Allroad 2.5 V6 TDI 180 QuaTTro(c5)diesel
- Audi A6 Allroad 2.7t 250 QuaTTro(c5)petrol
From quote to remapped in four steps
No jargon and no pressure. Here is exactly what happens.
- 01
Find your vehicle
Choose your make, model and engine to see the standard and remapped power and torque for your car.
- 02
Request a quote
Send your details and we contact you by SMS or call back with a quote. No obligation.
- 03
Book with your local site
Your local Remap Experts site arranges the remap and answers any questions about your car.
- 04
Remapped and dyno tested
Your remap is fully dyno tested, with a 30 day money back guarantee and a lifetime software warranty.
Everything you need to know
Plain-English guides to how remapping works, what it does and what to check first.
- 6 min read
What is ECU remapping?
The engine control unit, what a remap changes, and who it suits.
Read guide - 5 min read
The benefits of ECU remapping
More torque, better driveability and the potential for better economy.
Read guide - 6 min read
How ECU remapping works, step by step
From reading the original software to the dyno test.
Read guide