BHP+25 hp (20%)
Standard
125 hp
Tuned
150 hp
Torque+50 Nm (18%)
Standard
280 Nm
Tuned
330 Nm
Suitability
Good (7/10)Gains Profile
BalancedHeadroom
MediumVauxhall Astra 1.7 CDTi 125hp ECU Remapping
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.
How this engine compares
- 20thof 42 Vauxhall Astra engines by power gain
- 28%of the 9,842 engines we hold gain data for see a smaller power increase
- 27%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
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.
Considerations
!Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.
Other Astra (H) - 2004 - 2011 Engines
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