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Mercedes CLS CLS 500

Name: Mercedes CLS CLS 500 chip tuning
Brand: Mercedes
Price: 95.00 EUR
Availability: InStock

C218 Ph2 (2014–2018) · 408 hp

Stage 1

E85

E85 + Stage 1

	Original	After tuning	Diff
Power hp	408	485	+77
Torque Nm	600	850	+250

Power gain

+19%

Torque gain

+42%

Ready to feel these +77 hp on the road?

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

Order tuning file →

Stage 1 file from €95

Exact price depends on the ECU — confirmed when you upload the file

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

Power graph / Stage 1

PowerTorqueStock

	Original	After E85	Diff
Power hp	408	425	+17
Torque Nm	600	620	+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. Flex Fuel file: the car still runs on regular petrol whenever you want.

Save €2 796 a year at the pump

Get your E85 adaptation file for the Mercedes CLS

Order tuning file →

File from €100

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

Fuel cost — E85 vs petrol −46%

Petrol · 100 km

~~19.0 L~~ · €40.42

E85 · 100 km

24.0 L · €21.78

You save ≈ €18.64 every 100 km — about €2 796 a year (over 15 000 km)

E85 uses ≈ +26% 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 CLS, calculateur d'économies par département →

	Original	After E85 + Stage 1	Diff
Power hp	408	530	+122
Torque Nm	600	915	+315

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.

+122 hp and €2 796/year saved — both

Get your E85 + Stage 1 file for the Mercedes CLS

Order tuning file →

File from €100

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

Fuel cost — E85 vs petrol −46%

Petrol · 100 km

~~19.0 L~~ · €40.42

E85 · 100 km

24.0 L · €21.78

You save ≈ €18.64 every 100 km — about €2 796 a year (over 15 000 km)

E85 uses ≈ +26% 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 CLS, calculateur d'économies par département →

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