Catalog/ Cars/ Mercedes/ B

Mercedes B 250

Name: Mercedes B 250 chip tuning
Brand: Mercedes
Price: 140.00 EUR
Availability: InStock

W246 (2012–2018) · 211 hp

Stage 1

E85

E85 + Stage 1

	Original	After tuning	Diff
Power hp	211	250	+39
Torque Nm	350	400	+50

Power gain

+18%

Torque gain

+14%

Ready to feel these +39 hp on the road?

Get your ready-to-flash Stage 1 file for the Mercedes B

Order tuning file →

Stage 1 file: €140

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

Power graph / Stage 1

PowerTorqueStock

	Original	After E85	Diff
Power hp	211	220	+9
Torque Nm	350	365	+15

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. Flex Fuel file: the car still runs on regular petrol whenever you want.

Save €1 471 a year at the pump

Get your E85 adaptation file for the Mercedes B

Order tuning file →

File from €100

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

Fuel cost — E85 vs petrol −47%

Petrol · 100 km

~~9.8 L~~ · €20.9

E85 · 100 km

12.2 L · €11.1

You save ≈ €9.81 every 100 km — about €1 471 a year (over 15 000 km)

E85 uses ≈ +24% more litres, but the pump price (€0.909/L vs €2.123/L, France average on October 29, 2026) more than makes up for it.

🇫🇷 Version française : conversion éthanol E85 de la Mercedes B, calculateur d'économies par département →

	Original	After E85 + Stage 1	Diff
Power hp	211	275	+64
Torque Nm	350	440	+90

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.

+64 hp and €1 471/year saved — both

Get your E85 + Stage 1 file for the Mercedes B

Order tuning file →

File from €100

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

Fuel cost — E85 vs petrol −47%

Petrol · 100 km

~~9.8 L~~ · €20.9

E85 · 100 km

12.2 L · €11.1

You save ≈ €9.81 every 100 km — about €1 471 a year (over 15 000 km)

E85 uses ≈ +24% more litres, but the pump price (€0.909/L vs €2.123/L, France average on October 29, 2026) more than makes up for it.

🇫🇷 Version française : conversion éthanol E85 de la Mercedes B, calculateur d'économies par département →

Original ECU files for Mercedes B Stock (ORI) files of this model · €20 per file →