McLaren 650S 2014-2016 3.8 V8 Twin turbo 641bhp Stage 1 Eco remap figures
The Stage 1 Eco map for the McLaren 650S 3.8 V8 Twin turbo 641bhp (2014-2016): 704bhp and 739Nm expected from a standard 641bhp and 678Nm, up to +63bhp and +61Nm. It keeps most of the Stage 1 gain (Stage 1 is 725bhp and 744Nm) 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 | 641 bhp | 704 bhp | +63 bhp |
| Torque | 678 Nm | 739 Nm | +61 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 641 bhp | 678 Nm | |
| Stage 1Maximum software-only performance | 725 bhp | 744 Nm | +84 bhp +66 Nm |
| Stage 1 EcoPerformance with economy in mind | 704 bhp | 739 Nm | +63 bhp +61 Nm |
| Eco mapEconomy first | 697 bhp | 735 Nm | +56 bhp +57 Nm |
Who is the Stage 1 Eco map for?
- Drivers who want a quicker, more responsive car, tuned with economy in mind.
- Daily drivers who want strong mid-range pull without giving up efficiency.
- 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 McLaren 650S is expected to give 725bhp and 744Nm (+84bhp, +66Nm). The Stage 1 Eco keeps about 75% of that power gain and 92% of the torque gain, so you get 704bhp and 739Nm: 21bhp less and 5Nm 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 641bhp and 678Nm.
What this means for your 650S
On a turbocharged petrol engine a remap adjusts boost, ignition timing and fuelling together, so both power and mid-range torque rise and the car pulls harder out of corners and junctions.
Engine management is by a Bosch ME17.8.3.2 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 McLaren 650S 3.8 V8 Twin turbo 641bhp?
We expect 704bhp and 739Nm against 641bhp and 678Nm as standard: up to +63bhp and +61Nm. 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 725bhp and 744Nm. Stage 1 Eco gives 21bhp less and 5Nm 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 (704bhp and 739Nm) and still care about running costs. Choose the Eco map (697bhp and 735Nm) 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 McLaren 650S figures
Other petrol variants
All petrol 650S variants · 650S 2014-2016 overview · All McLaren figures