McLaren 675LT All 3.8 V8 675hp

Real standard and upgraded performance figures for the 3.8 V8 675hp engine in the McLaren 675LT All.

Below: measured output for the 3.8 V8 675hp in the McLaren 675LT All, standard vs. remapped, in both horsepower and torque.

Horsepower (HP)Torque (Nm)
Standard675700
Stage 1700750
Stage 2740850
Make
McLaren
Model
675LT
Generation
All
Engine
3.8 V8 675hp
Fuel type
petrol

Frequently asked questions

Is Stage 1 tuning safe for the McLaren 675LT All 3.8 V8 675hp?

Yes — Stage 1 for this engine is a software-only remap calibrated to stay within its stock mechanical limits (turbo, clutch, fueling), so no hardware changes are required.

How much more power does the 3.8 V8 675hp make after tuning?

Standard output is 675 HP / 700 Nm; Stage 1 on this engine typically reaches 700 HP / 750 Nm. Exact results can vary slightly with fuel quality and vehicle condition.

How long does a McLaren 675LT All 3.8 V8 675hp remap take?

Once your original file is uploaded through the member panel, most requests for this engine are completed within a few hours.

Can the 3.8 V8 675hp be reverted to its original file?

Yes — we keep the original file on record for the request, so the ECU can be put back to stock at any time.