Considering an ECU remap for your Vauxhall Astra 1.7 CDTi 125hp? A Stage 1 remap can take this (H) - 2004 - 2011 diesel engine from 125 BHP to 150 BHP and from 280 Nm to 330 Nm of torque (turbocharged). This engine scores 7/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Vauxhall Astra can achieve.
The Vauxhall Astra 1.7 CDTi 125hp is a 1.7L turbocharged diesel engine producing 125 BHP and 280 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 150 BHP and 330 Nm — a gain of around 25 BHP (20%) and 50 Nm (18%).
This engine has moderate 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 moderate, based on the percentage gain available from the factory output.
Considerations: Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.
Fuel economy note: possible improvement with conservative driving.
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 |
|---|---|---|---|---|---|
| 1.7 CDTi 80hp | 80 → 105 | +25 | 170 → 230 | +60 | Excellent (8/10) |
| 1.7 CDTi 100hp | 100 → 130 | +30 | 240 → 295 | +55 | Good (7.5/10) |
| 1.7 CDTi 110hp | 110 → 150 | +40 | 260 → 330 | +70 | Excellent (8/10) |
Get a personalised remap quote for your Vauxhall Astra. 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.
