Considering an ECU remap for your Seat Leon 1.8i 20v 125hp? A Stage 1 remap can take this 1M - 2000 - 2006 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 Seat Leon can achieve.
The Seat Leon 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.
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 SDI 68hp | 68 → 80 | +12 | 133 → 155 | +22 | Good (7/10) |
| 75 → 85 |
| +10 |
| 128 → 140 |
| +12 |
| Moderate (4.5/10) |
| 1.9 TDI 90hp | 90 → 120 | +30 | 210 → 280 | +70 | Excellent (8/10) |
| 1.6i 8v 100hp | 100 → 107 | +7 | 145 → 155 | +10 | Moderate (4/10) |
| 1.6i 16v 105hp | 105 → 115 | +10 | 148 → 160 | +12 | Moderate (4/10) |
| 1.9 TDI 110hp | 110 → 140 | +30 | 235 → 295 | +60 | Good (7.5/10) |
| 1.9 TDI 130hp | 130 → 170 | +40 | 310 → 390 | +80 | Good (7.5/10) |
| 1.9 TDI 150hp | 150 → 190 | +40 | 320 → 410 | +90 | Good (7/10) |
| 1.8T 20v 180hp | 180 → 220 | +40 | 235 → 330 | +95 | Excellent (8/10) |
| 2.8 V6 204hp | 204 → 224 | +20 | 265 → 285 | +20 | Moderate (4/10) |
| 1.8T 20v 210hp | 210 → 240 | +30 | 270 → 340 | +70 | Good (7.5/10) |
| 1.8T 20v 225hp | 225 → 260 | +35 | 280 → 400 | +120 | Good (7.5/10) |
Get a personalised remap quote for your Seat Leon. 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.
