SEAT Leon (1P) 2005-2012 1.8 TSI 157bhp remap figures
The SEAT Leon 1.8 TSI 157bhp (2005-2012) is a petrol 1.8L model making 157bhp and 250Nm as standard. After a Stage 1 ECU remap we expect 215bhp and 345Nm - up to 58bhp and 95Nm more than stock.
Choose your map
Stage 1 remap figures
A Stage 1 remap is a software-only change to the ECU on an otherwise standard car. It needs no extra parts, which makes it the usual starting point.
| Stock | Vanguard expected | Expected gain, up to | |
|---|---|---|---|
| Power | 157 bhp | 215 bhp | +58 bhp |
| Torque | 250 Nm | 345 Nm | +95 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 157 bhp | 250 Nm | |
| Stage 1Maximum software-only performance | 215 bhp | 345 Nm | +58 bhp +95 Nm |
| Stage 1 EcoPerformance with economy in mind | 201 bhp | 337 Nm | +44 bhp +87 Nm |
| Eco mapEconomy first | 196 bhp | 333 Nm | +39 bhp +83 Nm |
Who is the Stage 1 map for?
- Drivers who want a noticeably quicker car from a software-only change, with no new parts.
- Daily drivers who want stronger mid-range pull and a sharper throttle.
- Anyone who wants the biggest gain we list without fitting hardware.
What this means for your Leon
Turbocharged petrol engines respond well to calibration changes: boost and timing are the main levers, and the result is a flatter, stronger torque curve as well as a higher peak.
This car is listed with a Bosch MED17.5 engine control unit. Older engine management is simpler to work with, but age matters: worn sensors, leaks and tired components can hold back what a remap delivers, which is why we run a diagnostic check first.
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 questions
How much power does the Stage 1 map give the SEAT Leon 1.8 TSI 157bhp?
We expect 215bhp and 345Nm against 157bhp and 250Nm as standard: up to +58bhp and +95Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.
Does a Stage 1 remap need any extra parts on the SEAT Leon 1.8 TSI 157bhp?
No. Stage 1 is a software-only change to the ECU on an otherwise standard car.
Is there a gentler map than Stage 1 for this engine?
Yes, two. Stage 1 Eco is performance with economy in mind: 201bhp and 337Nm expected. The Eco map is economy first: 196bhp and 333Nm. Both still sit above the standard 157bhp and 250Nm.
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 SEAT Leon figures
Other petrol variants
- 2.0 FSI 147bhp 2005-2012
- 2.0 TFSI 182bhp 2005-2012
- 1.4 TSI 123bhp 2005-2012
- 2.0 TFSI 197bhp 2005-2012
- 2.0 TFSI 208bhp 2005-2012
- 1.2 TSI 103bhp 2005-2012
- 1.6 100bhp 2005-2012
- 1.4 83bhp 2005-2012
- 2.0 TFSI 236bhp 2005-2012
- 2.0 TFSI 261bhp 2005-2012
All petrol Leon (1P) variants · Leon (1P) 2005-2012 overview · All SEAT figures