BMW X4

G02 2018 2021 · xDrive M40i (2018 - 2019)

Stage 1

E85

E85 + Stage 1

	Original	After tuning	Diff
Power hp	354	400	+46
Torque Nm	500	580	+80

Power gain

+13%

Torque gain

+16%

Ready to feel these +46 hp on the road?

Get your ready-to-flash Stage 1 file for the BMW X4

Order tuning file →

✓ Original file back-up ✓ Delivered in ~30 min ✓ Support included

Power graph / Stage 1

PowerTorqueStock

	Original	After E85	Diff
Power hp	354	370	+16
Torque Nm	500	520	+20

E85 adaptation (no Stage 1)

Just the fuel switch: the ECU is adapted to run Superéthanol E85 (up to 85% bio-ethanol) with no Stage 1 chip on top. You get a small power bump from ethanol's higher octane (~104 RON) and a much cheaper fill-up. Fully reversible; the car still runs on regular petrol whenever you want.

Save €2 497 a year at the pump

Get your E85 adaptation file for the BMW X4

Order tuning file →

✓ Original file back-up ✓ Delivered in ~30 min ✓ Support included

Fuel cost — E85 vs petrol −49%

Petrol · 100 km

~~16.5 L~~ · €34.03

E85 · 100 km

20.5 L · €17.38

You save ≈ €16.65 every 100 km — about €2 497 a year (over 15 000 km)

E85 uses ≈ +24% more litres, but the pump price (€0.85/L vs €2.06/L) more than makes up for it.

	Original	After E85 + Stage 1	Diff
Power hp	354	435	+81
Torque Nm	500	620	+120

E85 + Stage 1 remap

Chip tuning re-optimised for Superéthanol E85: the ignition and boost maps are calibrated to make full use of ethanol's higher octane (~104 RON). Bigger power and torque gains than either Stage 1 on petrol or E85 adaptation alone, plus the same cheap fill-up.

+81 hp and €2 497/year saved — both

Get your E85 + Stage 1 file for the BMW X4

Order tuning file →

✓ Original file back-up ✓ Delivered in ~30 min ✓ Support included

Fuel cost — E85 vs petrol −49%

Petrol · 100 km

~~16.5 L~~ · €34.03

E85 · 100 km

20.5 L · €17.38

You save ≈ €16.65 every 100 km — about €2 497 a year (over 15 000 km)

E85 uses ≈ +24% more litres, but the pump price (€0.85/L vs €2.06/L) more than makes up for it.