Catalog/ Cars/ Smart/ Roadster

Smart Roadster 0.7 Turbo

Name: Smart Roadster 0.7 Turbo chip tuning
Brand: Smart
Price: 85.00 EUR
Availability: InStock

452 (07/2003–04/2006) · 82 hp

Stage 1

E85

E85 + Stage 1

	Original	After tuning	Diff
Power hp	82	100	+18
Torque Nm	110	135	+25

Power gain

+22%

Torque gain

+23%

Ready to feel these +18 hp on the road?

Get your ready-to-flash Stage 1 file for the Smart Roadster

Order tuning file →

Stage 1 file: €85

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

Power graph / Stage 1

PowerTorqueStock

	Original	After E85	Diff
Power hp	82	85	+3
Torque Nm	110	115	+5

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 €551 a year at the pump

Get your E85 adaptation file for the Smart Roadster

Order tuning file →

File from €100

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

Fuel cost — E85 vs petrol −45%

Petrol · 100 km

~~3.8 L~~ · €8.12

E85 · 100 km

4.9 L · €4.45

You save ≈ €3.68 every 100 km — about €551 a year (over 15 000 km)

E85 uses ≈ +28% 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 Smart Roadster, calculateur d'économies par département →

	Original	After E85 + Stage 1	Diff
Power hp	82	110	+28
Torque Nm	110	145	+35

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.

+28 hp and €551/year saved — both

Get your E85 + Stage 1 file for the Smart Roadster

Order tuning file →

File from €100

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

Fuel cost — E85 vs petrol −45%

Petrol · 100 km

~~3.8 L~~ · €8.12

E85 · 100 km

4.9 L · €4.45

You save ≈ €3.68 every 100 km — about €551 a year (over 15 000 km)

E85 uses ≈ +28% 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 Smart Roadster, calculateur d'économies par département →

Original ECU files for Smart 450 stock (ORI) files · €20 per file →