Considering an ECU remap for your Audi A4 1.8i 20v 125hp? A Stage 1 remap can take this B5 - 1995 - 2001 petrol engine from 125 BHP to 135 BHP and from 170 Nm to 185 Nm of torque (naturally aspirated). This engine scores 4/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Audi A4 can achieve.
The Audi A4 1.8i 20v 125hp is a 1.8L naturally aspirated petrol engine producing 125 BHP and 170 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 135 BHP and 185 Nm — a gain of around 10 BHP (8%) and 15 Nm (9%).
This engine has limited remap suitability, with a balanced spread of gains across both power and torque — providing a noticeable improvement across the rev range. The tuning headroom is classified as limited, based on the percentage gain available from the factory output.
From a technical perspective, the transmission is manual and dsg/s tronic automatics are common depending on model/engine..
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
| Engine | BHP | Gain | Torque | Gain | Score |
|---|---|---|---|---|---|
| 1.9 TDI 75hp | 75 → 90 | +15 | 150 → 225 | +75 | Excellent (8/10) |
| 1.9 TDI 90hp | 90 → 120 | +30 | 202 → 270 | +68 | Excellent (8/10) |
| 1.9 TDI 110hp | 110 → 143 | +33 | 240 → 320 | +80 | Excellent (8/10) |
| 1.9 TDI 115hp | 115 → 145 | +30 | 285 → 360 | +75 | Good (7.5/10) |
| 1.8 T 150hp | 150 → 192 | +42 | 210 → 310 | +100 | Excellent (8/10) |
| 1.8 T 180hp | 180 → 192 | +12 | 210 → 310 | +100 | Good (7.5/10) |
Get a personalised remap quote for your Audi A4. We'll connect you with a trusted professional in your area.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method.
We recommend discussing your specific vehicle with a qualified remap professional before proceeding.
