Vauxhall Astra (J) 2009-2011 2.0 CDTi 157bhp Stage 1 Eco remap figures
The Stage 1 Eco map for the Vauxhall Astra 2.0 CDTi 157bhp (2009-2011): 195bhp and 413Nm expected from a standard 157bhp and 350Nm, up to +38bhp and +63Nm. It keeps most of the Stage 1 gain (Stage 1 is 208bhp and 419Nm) and is tuned with economy in mind: the choice if you want the performance and care what each tank costs.
Choose your map
Stage 1 Eco remap figures
Stage 1 Eco is performance with economy in mind. It keeps most of the Stage 1 gain, so the car still pulls well, but the map is shaped for efficient, relaxed driving rather than flat-out output. It is above the standard figures. We don't quote mpg, because economy depends on the car and how it is driven.
| Stock | Vanguard expected | Expected gain, up to | |
|---|---|---|---|
| Power | 157 bhp | 195 bhp | +38 bhp |
| Torque | 350 Nm | 413 Nm | +63 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 157 bhp | 350 Nm | |
| Stage 1Maximum software-only performance | 208 bhp | 419 Nm | +51 bhp +69 Nm |
| Stage 1 EcoPerformance with economy in mind | 195 bhp | 413 Nm | +38 bhp +63 Nm |
| Eco mapEconomy first | 191 bhp | 410 Nm | +34 bhp +60 Nm |
Who is the Stage 1 Eco map for?
- Drivers who want the pull of a remap for overtaking, motorways and towing, with the engine tuned with economy in mind.
- High-mileage drivers who want better performance and a more efficient everyday car in one map.
- Anyone who would otherwise take full Stage 1 but cares what each tank costs.
How Stage 1 Eco compares with Stage 1
Full Stage 1 on this Vauxhall Astra is expected to give 208bhp and 419Nm (+51bhp, +69Nm). The Stage 1 Eco keeps about 75% of that power gain and 91% of the torque gain, so you get 195bhp and 413Nm: 13bhp less and 6Nm less than Stage 1, with the map shaped for efficient, relaxed driving, so it suits you if you want the pull and care about running costs. Both sit above the standard 157bhp and 350Nm.
What this means for your Astra
On a diesel the biggest change is normally torque: the remap changes how much fuel and boost the ECU allows across the rev range, so pulling power arrives earlier and holds on longer.
This car is listed with a Bosch EDC17C19 engine control unit. We read the ECU on your car and compare it with the software listed here before any work starts, so you know what to expect before you commit.
We remap at our Belgrave Gate workshop in Leicester, or at your home or work within 30 miles, and every job starts with a diagnostic check.
Please note: these are expected figures, not guarantees. Real results vary with the condition of the vehicle, the ECU software version, fuel quality and the hardware fitted. Some options - including Stage 2 and anything that needs extra hardware - are for off-road or competition use only. We check every vehicle first and confirm what is achievable before any work starts.
Figures reviewed 22 October 2026.
Stage 1 Eco questions
How much power does the Stage 1 Eco map give the Vauxhall Astra 2.0 CDTi 157bhp?
We expect 195bhp and 413Nm against 157bhp and 350Nm as standard: up to +38bhp and +63Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.
How does Stage 1 Eco differ from Stage 1 on this engine?
Full Stage 1 is expected to give 208bhp and 419Nm. Stage 1 Eco gives 13bhp less and 6Nm less, in exchange for a map shaped with economy in mind. It still sits above the standard figures.
Is Stage 1 Eco or the Eco map better for me?
Choose Stage 1 Eco if you want the performance (195bhp and 413Nm) and still care about running costs. Choose the Eco map (191bhp and 410Nm) if economy matters more than pace.
Will the Stage 1 Eco map save fuel?
It is tuned with economy in mind while keeping most of the Stage 1 performance. We do not quote mpg figures, because economy depends on the car, its condition and how it is driven.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.
More Vauxhall Astra figures
Other diesel variants
- 2.0 CDTi 162bhp 2012-2016
- 1.6 CDTi 134bhp 2014>
- 1.7 CDTi 128bhp 2009-2016
- 1.7 CDTi 123bhp 2009-2016
- 2.0 CDTi 192bhp 2012-2016
- 1.6 CDTi 108bhp 2014>
- 1.7 CDTi 108bhp 2009-2016
- 1.3 CDTi 93bhp 2009-2016
All diesel Astra (J) variants · Astra (J) 2009-2016 overview · All Vauxhall figures