
Smart ForFour Stage 1
6 engines – 61–177 hp
6
engines
+26 hp
Max gain
+20%
Avg. gain
✓
Eco Tuning

2004 - 2014
3 engines
| Engine | Fuel | Stock (hp) | Stage 1 (hp) | Gain |
|---|---|---|---|---|
| 1.5 CDI 68hp | Diesel | 68 | 94 | +26 (38%) |
| 1.5 DCI 95hp | Diesel | 95 | 118 | +23 (24%) |
| 1.5 Turbo 177hp | Petrol | 177 | 183 | +6 (3%) |

2014 ->
3 engines
| Engine | Fuel | Stock (hp) | Stage 1 (hp) | Gain |
|---|---|---|---|---|
| 0.9 Turbo 90hp | Petrol | 90 | 112 | +22 (24%) |
| 1.0i 71hp | Petrol | 71 | 81 | +10 (14%) |
| 1.0i 61hp | Petrol | 61 | 70 | +9 (15%) |
FAQ
Is Stage 1 safe for the engine?+
Yes, Stage 1 is a mild optimization within factory safety margins. We use dealer-level equipment and verify results on a dyno.
How long does it take?+
Usually 2–4 hours, including diagnostics, remapping, and a control measurement on our dynamometer.
Does it affect fuel consumption?+
Stage 1 can reduce consumption (better torque curve) or slightly increase it under aggressive driving. On average, consumption stays the same.